Calluses and corns—often colloquially referred to as “plantar warts” in non-medical settings (though they are not warts at all)—are localized areas of thickened, hyperkeratotic skin that develop in response to repeated mechanical pressure or friction. True corns (clavi) are typically smaller, more circumscribed, and often have a central, conical core of hardened keratin that can press into underlying dermal tissue, causing pain—especially when weight-bearing. They most commonly occur over bony prominences on the toes (e.g., dorsal or interdigital surfaces) or soles.

Treatment begins with identifying and eliminating the causative biomechanical stressor. This includes wearing properly fitted footwear with adequate toe box width and cushioning, using padded shoe inserts or orthotics to redistribute pressure, and avoiding high heels or tight shoes. Over-the-counter salicylic acid preparations (12–40% concentration) in the form of plasters, gels, or solutions may be applied daily after soaking and gentle debridement; treatment typically requires several weeks of consistent use. Professional in-office debridement by a podiatrist—using sterile instruments to carefully pare down the hyperkeratotic tissue—is safe, effective, and often provides immediate symptomatic relief. In recalcitrant or recurrent cases, especially those associated with underlying structural deformities (e.g., hammertoe, bunions, or metatarsal misalignment), custom orthotics or surgical correction of the deformity may be warranted.

It is critical to distinguish corns from plantar warts (caused by human papillomavirus), which may appear similar but demonstrate characteristic features such as interruption of dermatoglyphics, pinpoint bleeding upon paring, and lack of pain with direct pressure (but tenderness with lateral squeeze). Misdiagnosis can lead to inappropriate treatment and delayed resolution. Patients with diabetes, peripheral neuropathy, or compromised circulation should never attempt self-treatment and must seek evaluation by a qualified foot specialist to prevent ulceration or infection.

Oral itching—often described as a tingling, crawling, or mild burning sensation in the mouth—can arise from several underlying causes. One of the most common is allergic contact stomatitis, frequently triggered by sensitivities to dental materials (e.g., nickel in orthodontic appliances, mercury in amalgam fillings), oral care products (such as sodium lauryl sulfate in toothpaste or cinnamon flavoring), or foods (especially raw fruits and vegetables in patients with oral allergy syndrome). Another frequent cause is xerostomia (dry mouth), which may result from medications (e.g., anticholinergics, antidepressants), autoimmune conditions like Sjögren’s syndrome, or aging-related salivary gland hypofunction; reduced saliva leads to mucosal irritation and a subjective sense of itchiness.

Infectious etiologies should also be considered: early or mild candidiasis (particularly erythematous or atrophic forms) can present with pruritus rather than overt white plaques, especially in immunocompromised individuals or those using inhaled corticosteroids without proper rinsing. Viral infections such as herpes simplex virus (HSV) may cause prodromal itching before vesicle formation. Less commonly, neurological conditions—including trigeminal sensory neuropathy, postherpetic neuralgia, or even central causes like multiple sclerosis—can manifest as persistent oral dysesthesia, including itch.

Other potential contributors include nutritional deficiencies (e.g., iron, vitamin B12, folate, or zinc), lichen planus (which may cause burning or itching alongside reticular white striae), and psychological factors such as anxiety or somatic symptom disorder. A thorough clinical evaluation—including detailed history (onset, duration, triggers, associated symptoms), intraoral examination, and, when indicated, patch testing, salivary flow assessment, fungal cultures, or biopsy—is essential to determine the precise etiology and guide appropriate management.

If you notice blood-tinged sputum—often described as streaks or flecks of bright red blood mixed with mucus—it’s important to take this symptom seriously, though it’s not always a sign of a life-threatening condition. Common benign causes include acute bronchitis, viral upper respiratory infections, or vigorous coughing that irritates the delicate mucosa of the airways, leading to minor capillary rupture. Less common but more concerning etiologies include pneumonia, tuberculosis, bronchiectasis, chronic obstructive pulmonary disease (COPD) exacerbation, pulmonary embolism, or malignancy—particularly in individuals with risk factors such as smoking history, age over 40, unexplained weight loss, persistent cough, or hemoptysis that increases in volume.

It is essential to distinguish true hemoptysis (blood originating from the lower respiratory tract) from pseudohemoptysis—such as blood from gingival bleeding, nasal epistaxis, or gastrointestinal sources like hematemesis—which may be mistaken for respiratory bleeding. A careful clinical evaluation—including detailed history (onset, duration, associated symptoms like fever, dyspnea, chest pain, or night sweats), physical examination, and targeted investigations—is warranted. Initial workup often includes high-resolution chest imaging (e.g., chest X-ray or CT angiography if pulmonary embolism is suspected), sputum analysis (including acid-fast bacilli smear and culture), and possibly bronchoscopy depending on clinical suspicion and imaging findings.

Do not ignore even small amounts of blood in sputum. While isolated, self-limited streaking may resolve spontaneously, any episode of hemoptysis merits prompt medical assessment to rule out serious underlying pathology. Patients should avoid tobacco use, refrain from suppressing productive coughs unnecessarily, and seek urgent evaluation if hemoptysis is recurrent, progressive, or accompanied by systemic symptoms such as fevers, unintentional weight loss, or worsening shortness of breath.

Night blindness, or nyctalopia, is a visual impairment characterized by difficulty seeing in low-light conditions—such as at dusk, in dimly lit rooms, or while driving at night—despite normal vision in daylight. It is not a disease itself but rather a symptom of an underlying condition affecting the retina’s rod photoreceptors, which are responsible for scotopic (low-light) vision.

To assess whether you may have night blindness, consider the following clinical indicators: persistent trouble adapting to darkness after exposure to bright light (e.g., exiting a well-lit building into a parking lot at night); delayed dark adaptation—taking significantly longer than 20–30 minutes for your vision to improve in the dark; increased glare sensitivity, especially from oncoming headlights; and frequent tripping or bumping into objects in poorly illuminated environments. Importantly, these symptoms should occur in the absence of obvious external factors like uncorrected refractive error, cataracts, or inadequate ambient lighting.

Self-assessment alone is insufficient for diagnosis. A comprehensive ophthalmologic evaluation is essential and typically includes best-corrected visual acuity testing, slit-lamp examination, dilated fundus exam to assess retinal structure, and specialized testing such as dark-adaptation curves or electroretinography (ERG) to objectively measure rod function. Common underlying causes include vitamin A deficiency, retinitis pigmentosa, congenital stationary night blindness, advanced glaucoma, diabetic retinopathy, and certain inherited retinal dystrophies.

If you experience consistent difficulties with night vision, consult an ophthalmologist promptly—not only to identify treatable causes (e.g., nutritional deficiencies or cataracts) but also to rule out progressive retinal disorders that may benefit from early intervention, genetic counseling, or enrollment in clinical trials.

If a child experiences a decline in vision, prompt and thorough evaluation by a pediatric ophthalmologist or optometrist is essential. Vision changes in children may stem from common, correctable conditions such as myopia (nearsightedness), hyperopia (farsightedness), astigmatism, or amblyopia (“lazy eye”), but they can also signal more serious concerns—including retinal abnormalities, optic nerve pathology, neurological disorders, or systemic conditions affecting visual function.

Parents should observe for behavioral clues—such as squinting, frequent eye rubbing, sitting unusually close to screens or books, tilting the head, or difficulty recognizing faces or objects at typical distances. Importantly, young children often do not verbalize visual difficulties, making routine vision screening critical. The American Academy of Pediatrics recommends formal vision assessments at ages 3, 4, and 5 years, with earlier evaluation if risk factors are present (e.g., prematurity, family history of strabismus or childhood glaucoma, or developmental delay).

A comprehensive eye examination includes visual acuity testing appropriate for age (e.g., picture charts for preverbal children), cycloplegic refraction to detect latent refractive error, assessment of ocular alignment and motility, pupil evaluation, and fundoscopic examination. In cases of unexplained or asymmetric vision loss, neuroimaging (e.g., MRI of the brain and orbits) or referral to pediatric neurology or genetics may be warranted.

Early intervention significantly improves outcomes—especially for amblyopia, where treatment efficacy declines sharply after age 7–8. Management may involve corrective lenses, patching therapy, atropine penalization, or surgical correction of strabismus or cataracts. Ongoing monitoring is vital, as refractive errors can progress rapidly during childhood, particularly in myopia.

Parents should avoid delaying evaluation based on assumptions that “children will outgrow” vision problems—most refractive and neuro-ophthalmic conditions require targeted, evidence-based intervention. Scheduling an appointment with a qualified eye care provider within two weeks of noticing persistent or progressive symptoms is strongly advised.

Removing the uterus (hysterectomy) does not directly affect sexual intercourse or sexual function in most individuals. The uterus itself is not involved in arousal, orgasm, or vaginal sensation—these functions depend primarily on the clitoris, vaginal nerves and blood supply, pelvic floor muscles, and hormonal status. After a hysterectomy, many people report unchanged or even improved sexual satisfaction, particularly if the surgery relieved pre-existing symptoms such as chronic pelvic pain, heavy menstrual bleeding, or fibroid-related discomfort.

However, individual experiences vary. Some people may notice subtle changes—for example, altered depth of vaginal penetration if the cervix is also removed (total hysterectomy), or temporary changes in libido due to postoperative fatigue, emotional adjustment, or concurrent oophorectomy (removal of ovaries), which can lead to surgical menopause and decreased estrogen levels. If ovarian function is preserved, hormone production typically continues normally, supporting vaginal tissue health and sexual response.

It’s important to allow adequate healing time—typically 6 to 8 weeks—before resuming intercourse, as advised by your surgeon, to prevent complications such as infection or wound dehiscence. Open communication with your healthcare provider about concerns, counseling, or pelvic floor physical therapy can further support sexual well-being during recovery and beyond.

If you have high myopia—typically defined as a refractive error of −6.00 diopters or more—it’s important to recognize that this is not just a vision correction issue but a condition requiring ongoing ophthalmologic monitoring. High myopia increases the risk of serious sight-threatening complications, including posterior vitreous detachment, retinal tears and detachments, myopic maculopathy (such as choroidal neovascularization or macular atrophy), glaucoma, and early-onset cataracts. Therefore, comprehensive dilated eye examinations should be performed annually—or more frequently if clinically indicated—to assess retinal integrity, optic nerve health, intraocular pressure, and macular structure.

Corrective options include spectacles, contact lenses (including specialty soft or rigid gas-permeable lenses), and, in select cases, refractive surgery such as LASIK or SMILE—but only after careful evaluation confirms stable refraction, adequate corneal thickness, and absence of contraindications like progressive axial elongation or significant retinal pathology. Importantly, refractive surgery does not reduce the long-term ocular risks associated with high myopia; it only addresses optical correction.

Lifestyle and preventive strategies also play a role: consistent outdoor activity during childhood and adolescence may help slow myopia progression, while avoiding excessive near work without breaks (e.g., following the 20-20-20 rule) supports visual comfort. For children and adolescents with rapidly progressing myopia, evidence-based interventions—including low-dose atropine eye drops, orthokeratology (overnight rigid contact lenses), or multifocal soft contact lenses—may be considered under the guidance of a pediatric ophthalmologist or optometrist specializing in myopia control.

Patients with high myopia should be counseled on warning signs requiring urgent evaluation: sudden onset of new floaters, flashing lights (photopsia), a curtain-like shadow in the peripheral or central visual field, or abrupt decline in visual acuity. Prompt assessment can prevent irreversible vision loss. Regular follow-up with an ophthalmologist ensures timely detection and management of complications, preserving functional vision over the lifespan.

HIV transmission occurs through specific routes involving direct contact with certain infectious bodily fluids—primarily blood, semen, vaginal fluids, rectal fluids, and breast milk—from a person living with HIV who has a detectable viral load. The risk of transmission varies significantly depending on the exposure type, viral load, presence of other sexually transmitted infections, mucosal integrity, and use of preventive interventions.

Per-act transmission probabilities (estimated from epidemiologic studies) are as follows: receptive anal intercourse carries the highest risk—approximately 1.4% per exposure; insertive anal intercourse is lower at about 0.11%. For vaginal intercourse, the estimated risk is roughly 0.08% per act for the receptive partner and 0.04% for the insertive partner. Sharing needles or syringes for injection drug use carries an estimated risk of 0.63% per use. Mother-to-child transmission without intervention ranges from 15–45%, but this drops to less than 1% with appropriate antiretroviral therapy, cesarean delivery when indicated, and avoidance of breastfeeding in resource-rich settings.

Importantly, no documented cases of HIV transmission have occurred through casual contact—including hugging, shaking hands, sharing food or utensils, toilet seats, swimming pools, or insect bites. Saliva, tears, and sweat do not contain sufficient concentrations of HIV to cause infection. Additionally, effective antiretroviral therapy that achieves and maintains viral suppression (undetectable viral load) eliminates the risk of sexual transmission—this is the foundation of the “Undetectable = Untransmittable” (U=U) scientific consensus.

Prevention strategies such as consistent condom use, pre-exposure prophylaxis (PrEP), post-exposure prophylaxis (PEP), sterile needle exchange, and routine HIV testing remain critical components of comprehensive HIV prevention. Accurate risk assessment should always consider individual clinical and behavioral context—and consultation with a healthcare provider is recommended for personalized guidance.

Recurrent tooth pain can stem from a variety of dental and non-dental causes, and identifying the underlying etiology is essential for effective management. Common dental causes include dental caries (tooth decay), which may progress to pulpitis—either reversible or irreversible—depending on the extent of inflammation and bacterial invasion into the dental pulp. Other frequent contributors are periodontal disease (e.g., gingivitis or periodontitis), periapical abscesses, cracked or fractured teeth, defective restorations, or exposed dentin due to gum recession or enamel erosion. Less common but clinically significant causes include dental trauma, impacted teeth (especially third molars), or odontogenic cysts and tumors.

Non-dental (referred) sources must also be considered, particularly when clinical and radiographic dental examinations are unremarkable. These may include trigeminal neuralgia, temporomandibular joint (TMJ) disorders, sinusitis (especially maxillary sinus involvement), cluster headaches, or even cardiac angina presenting as atypical orofacial pain. In rare cases, malignancies involving the oral cavity, skull base, or adjacent structures can manifest with persistent dental pain.

A thorough evaluation—including a detailed history (onset, character, duration, triggers, radiation, and associated symptoms), comprehensive clinical examination, diagnostic imaging (e.g., periapical radiographs, panoramic radiograph, or cone-beam CT when indicated), and, if necessary, consultation with specialists (e.g., endodontist, periodontist, oral surgeon, neurologist, or ENT specialist)—is critical to establish an accurate diagnosis. Delayed or inappropriate treatment may lead to complications such as cellulitis, osteomyelitis, or systemic infection. Therefore, persistent or recurrent tooth pain warrants timely professional assessment rather than self-management or prolonged analgesic use.

Yes, people with diabetes can generally eat prunes (dried plums) in moderation as part of a balanced, carbohydrate-controlled diet. Prunes have a low glycemic index (GI ≈ 29), meaning they cause a relatively slow and modest rise in blood glucose compared to high-GI foods. Their fiber content—particularly soluble fiber—helps slow carbohydrate absorption and supports postprandial glycemic control. A typical serving of 3–4 medium prunes (about 30 g) contains approximately 18–20 g of carbohydrates, including 2–3 g of dietary fiber and naturally occurring sugars (mainly glucose and sorbitol). Sorbitol, a sugar alcohol present in prunes, is absorbed more slowly than glucose and contributes less to acute blood sugar spikes—but excessive intake may cause gastrointestinal discomfort such as bloating or diarrhea.

Individual responses to prunes can vary depending on overall meal composition, insulin sensitivity, medication regimen, and portion size. Therefore, it’s important for individuals with diabetes to monitor their blood glucose before and 1–2 hours after consuming prunes to assess personal tolerance. Prunes should be counted toward total daily carbohydrate allotments and ideally paired with a source of protein or healthy fat (e.g., a small handful of almonds) to further stabilize glycemic response. As with all dietary decisions in diabetes management, consultation with a registered dietitian or certified diabetes care and education specialist is recommended to tailor intake to individual health goals, medications, and metabolic targets.

Lower eyelid bags—commonly referred to as “eye bags”—result from a combination of anatomical, age-related, and lifestyle factors. Medically, they arise primarily from herniation of orbital fat pads through the thin orbital septum, often compounded by skin laxity, loss of midface volume, and/or chronic fluid retention. Effective treatment depends on accurately identifying the underlying cause(s), as approaches differ significantly for true fat prolapse versus edema, pigmentation, or structural shadowing.

For mild, transient puffiness related to allergies, sleep deprivation, high sodium intake, or alcohol consumption, conservative measures are first-line: consistent 7–9 hours of quality sleep, sodium moderation, cold compresses, topical caffeine-containing serums (which may temporarily constrict capillaries and reduce fluid accumulation), and allergen avoidance. These strategies address reversible contributors but do not alter structural anatomy.

In cases of persistent, anatomically driven lower eyelid fullness—especially when accompanied by visible fat bulges, tear-trough hollowing, or a tired appearance despite adequate rest—surgical intervention is often the most durable solution. Transconjunctival blepharoplasty (performed via an incision inside the lower lid) allows precise repositioning or conservative removal of protruding fat, preserving structural support and minimizing external scarring. In select patients with concurrent skin excess or muscle laxity, a transcutaneous approach or combination with canthopexy may be indicated. Non-surgical options such as hyaluronic acid fillers can camouflage tear-trough deformities but carry risks—including Tyndall effect, vascular compromise, and asymmetry—and provide only temporary improvement (typically 9–18 months).

It’s essential to consult a board-certified oculoplastic surgeon or facial plastic surgeon for individualized assessment. Imaging (e.g., high-resolution orbital ultrasound or MRI) is rarely needed but may help differentiate fat prolapse from other causes in atypical presentations. Importantly, unrealistic expectations—such as complete eradication of all lower lid fullness—should be addressed preoperatively, as subtle, natural contour is the goal, not absolute flatness.

Yes, intracerebral hemorrhage (ICH)—a type of stroke caused by bleeding within the brain tissue—can lead to a range of long-term neurological deficits and functional impairments, collectively referred to as sequelae or post-stroke complications. The specific nature and severity of these sequelae depend on several factors, including the location and volume of the hemorrhage, the speed of hematoma expansion, the patient’s age and baseline health status, and the timeliness and quality of acute medical and rehabilitative interventions.

Common neurological sequelae include hemiparesis or hemiplegia (weakness or paralysis on one side of the body), sensory deficits (e.g., reduced touch, temperature, or proprioception), and visual field deficits such as homonymous hemianopia—particularly with occipital or parietal lobe involvement. Language disturbances (aphasia) may occur with dominant-hemisphere (typically left) frontal or temporal lobe hemorrhages, while neglect syndromes (e.g., unilateral spatial neglect) are frequently seen after right parietal lesions.

Cognitive impairments—including deficits in attention, executive function, processing speed, and memory—are prevalent and may persist even after motor recovery. Emotional and behavioral changes are also common: depression affects up to 30–50% of survivors, and anxiety, emotional lability (pseudobulbar affect), and apathy may significantly impact quality of life and rehabilitation engagement. Seizures occur in approximately 5–15% of ICH survivors, especially in cases involving cortical involvement or larger hematoma volumes.

Long-term functional consequences often include impaired activities of daily living (ADLs), reduced mobility, increased risk of falls, dysphagia (which elevates aspiration pneumonia risk), and urinary or bowel dysfunction. Importantly, survivors face an elevated risk of recurrent cerebrovascular events—including both recurrent ICH and ischemic stroke—underscoring the need for rigorous secondary prevention strategies targeting modifiable risk factors such as hypertension, anticoagulant management, alcohol use, and cerebral amyloid angiopathy screening when clinically indicated.

Early, multidisciplinary rehabilitation—including physical therapy, occupational therapy, speech-language pathology, neuropsychology, and social work—is critical to optimizing functional outcomes and minimizing disability. Prognosis varies widely; while some patients achieve near-complete recovery, others require long-term assistance or institutional care. Ongoing follow-up with neurology, primary care, and rehabilitation specialists supports comprehensive, person-centered recovery planning.

Gum bleeding, or gingival bleeding, is most commonly caused by gingivitis—the early, reversible stage of gum disease. This occurs when dental plaque, a sticky biofilm of bacteria, accumulates along the gumline and triggers localized inflammation. As a result, the gingival tissues become swollen, tender, and prone to bleeding during brushing, flossing, or even gentle probing.

Other frequent contributors include poor oral hygiene habits, infrequent professional dental cleanings, ill-fitting dental appliances (such as dentures or orthodontic devices), and aggressive toothbrushing with a hard-bristled brush or excessive force. Hormonal fluctuations—particularly during pregnancy, puberty, or menstruation—can also increase gingival vascular permeability and sensitivity, leading to heightened bleeding tendency.

Less common but clinically important causes include systemic conditions such as vitamin C or K deficiency, thrombocytopenia, leukemia, hemophilia, or other coagulopathies. Certain medications—including anticoagulants (e.g., warfarin, apixaban), antiplatelet agents (e.g., aspirin, clopidogrel), and some antihypertensives (e.g., nifedipine, phenytoin)—may also predispose individuals to gingival bleeding, either through altered clotting function or drug-induced gingival overgrowth.

If gum bleeding persists for more than 7–10 days despite improved oral hygiene—or if it occurs spontaneously, is accompanied by gum recession, loose teeth, persistent bad breath (halitosis), or systemic symptoms like fatigue or unexplained bruising—a comprehensive dental and medical evaluation is warranted to rule out periodontitis, underlying hematologic disorders, or other systemic disease.

Ovarian cancer prognosis varies significantly depending on several key factors, including the histologic type and grade of the tumor, the stage at diagnosis, the patient’s age and overall health, and the extent of surgical cytoreduction achieved during initial treatment. Overall, the five-year relative survival rate for all stages combined is approximately 49% in the United States, according to recent SEER data. However, this figure masks substantial variation: for women diagnosed with localized disease (Stage I), the five-year survival rate exceeds 93%; for regional spread (Stage II–III), it declines to about 75% and 31%, respectively; and for distant metastatic disease (Stage IV), it drops to roughly 31%. High-grade serous carcinoma—the most common and aggressive subtype—often presents at an advanced stage and tends to have a poorer prognosis compared with low-grade serous, mucinous, or borderline tumors, which typically follow a more indolent course. Optimal cytoreductive surgery—defined as leaving no residual tumor larger than 1 cm—and subsequent platinum-based chemotherapy remain the cornerstone of treatment and are strongly associated with improved progression-free and overall survival. Emerging biomarkers, such as BRCA1/2 germline mutations and homologous recombination deficiency status, also inform prognosis and guide targeted therapies like PARP inhibitors, which have demonstrated significant survival benefits in selected populations.

Dr. Wang Wei is a Deputy Chief Physician at China–Japan Friendship Hospital, a leading national tertiary care hospital in Beijing. As a Deputy Chief Physician, he holds a senior clinical and academic position, reflecting extensive experience, advanced medical training, and demonstrated expertise in his specialty. This title is conferred by China’s national physician职称 (professional title) system after rigorous evaluation of clinical competence, research output, teaching contributions, and years of service. China–Japan Friendship Hospital is renowned for its excellence in respiratory medicine, critical care, integrative medicine, and international medical collaboration—serving as both a major clinical center and a key site for national health policy implementation and medical education.