Serum prealbumin (also known as transthyretin) and serum glycochenodeoxycholic acid (GCDCA)—often referred to colloquially as “glycocholic acid” or “glycocholate”—are distinct biomarkers with different physiological roles and clinical implications. It is important to clarify that elevated levels of these two markers rarely occur together for the same underlying reason, and their simultaneous elevation warrants careful, differential interpretation.

Prealbumin is a hepatic-synthesized transport protein with a short half-life (~2 days), making it a sensitive early indicator of hepatic synthetic dysfunction or acute malnutrition. A *low* prealbumin level is commonly associated with liver disease (e.g., cirrhosis, acute hepatitis), severe malnutrition, chronic inflammation, or critical illness. Conversely, *elevated* prealbumin is uncommon and not routinely clinically significant; when observed, it may reflect transient states such as corticosteroid use, hyperthyroidism, or recovery from acute illness—but it is not considered a primary diagnostic marker for pathology.

In contrast, glycochenodeoxycholic acid (GCDCA) is a conjugated secondary bile acid formed in the gut by bacterial dehydroxylation of chenodeoxycholic acid and subsequently reabsorbed via the enterohepatic circulation. Serum GCDCA rises significantly in conditions involving impaired hepatic uptake, intrahepatic or extrahepatic cholestasis, or reduced bile acid clearance—such as primary biliary cholangitis (PBC), primary sclerosing cholangitis (PSC), drug-induced cholestasis, or obstructive jaundice due to choledocholithiasis or malignancy. Elevated GCDCA is a highly specific marker of cholestatic liver injury and often precedes increases in conventional liver enzymes (e.g., ALP, GGT) or bilirubin.

Therefore, if both prealbumin and GCDCA are reported as “high” in the same clinical context, the finding should prompt verification: prealbumin elevation is atypical and may reflect assay interference, laboratory error, or a non-hepatic confounder (e.g., recent steroid administration). Clinically, the priority is to investigate the cause of elevated GCDCA—through liver ultrasound, MRCP or ERCP if indicated, serologic testing (e.g., AMA, ANCA), and assessment of other cholestasis markers. A comprehensive evaluation including history, physical exam, and additional liver function tests is essential to determine whether the abnormality reflects hepatocellular injury, cholestasis, metabolic disorder, or an extrahepatic process.

Teething—the process of primary teeth erupting through the gums—typically begins between 4 and 7 months of age and may continue until around age 3. While many parents report increased nighttime awakenings during this period, current evidence does not support a strong causal link between teething and frequent or prolonged night waking. Studies have shown that although some infants may experience mild irritability, drooling, gum rubbing, or decreased appetite in the days before a tooth emerges, objective data (e.g., actigraphy, sleep diaries validated with video monitoring) do not consistently demonstrate significant disruptions in total sleep duration or sleep architecture attributable to teething alone.

It is important to recognize that nighttime awakenings in infants are developmentally normal and influenced by numerous factors—including rapid brain maturation, circadian rhythm establishment, separation anxiety (peaking around 8–12 months), feeding patterns, environmental stimuli, and emerging motor skills (e.g., rolling, sitting up). Attributing sleep disturbances solely to teething may delay identification and management of other underlying contributors, such as inadequate sleep associations, inconsistent bedtime routines, or medical issues like gastroesophageal reflux or ear infections.

If an infant exhibits marked sleep disruption alongside systemic symptoms—such as fever >38.0°C (100.4°F), diarrhea, vomiting, rash, or persistent crying—it is essential to consult a pediatrician, as these signs are not typical of teething and may indicate another illness. Comfort measures for teething-related discomfort may include gentle gum massage with a clean finger, chilled (not frozen) teething rings, or age-appropriate doses of acetaminophen or ibuprofen—if recommended by a healthcare provider. Topical benzocaine gels are not advised due to risks of methemoglobinemia and lack of proven efficacy.

Dr. Gong Li is a board-certified attending physician specializing in internal medicine at Qilu Hospital of Shandong University, a nationally renowned tertiary academic medical center affiliated with Shandong University in Jinan, China. As a主治医师 (attending physician), she holds full clinical responsibility for patient care, including diagnosis, treatment planning, and supervision of residents and medical students. Her clinical expertise encompasses the evaluation and management of complex, multisystem disorders—particularly those involving cardiology, endocrinology, and geriatric medicine—within both inpatient and outpatient settings. Qilu Hospital is consistently ranked among China’s top hospitals for research output, clinical innovation, and comprehensive specialty care, and Dr. Gong actively contributes to its academic mission through clinical teaching and evidence-based practice.

Cervical ectropion—historically and inaccurately termed “cervical erosion”—is a common, benign physiological condition in which the glandular epithelium normally found inside the endocervical canal extends onto the visible ectocervix. It is especially prevalent among adolescents, pregnant individuals, and those using estrogen-containing contraceptives. Importantly, cervical ectropion is not a disease, does not increase cancer risk, and typically requires no treatment unless associated with persistent, bothersome symptoms such as contact bleeding or excessive mucoid discharge that significantly impacts quality of life.

Procedures sometimes marketed as “cervical erosion repair surgery” (e.g., electrocautery, cryotherapy, laser ablation, or radiofrequency ablation) are medically unnecessary in the vast majority of cases. When performed without clear clinical indication, these interventions carry avoidable risks—including cervical stenosis (narrowing of the cervical canal), scarring, chronic cervical insufficiency, post-procedural infection, prolonged vaginal discharge or spotting, and potential impact on future fertility or obstetric outcomes (e.g., increased risk of preterm birth or cervical laceration during labor). Moreover, such procedures may lead to unnecessary anxiety, overtreatment, and diversion from appropriate evaluation for actual pathologies like cervical intraepithelial neoplasia (CIN) or infection.

Current international guidelines—including those from the American College of Obstetricians and Gynecologists (ACOG) and the European Society of Gynaecological Oncology (ESGO)—emphasize that asymptomatic cervical ectropion should never be treated. If symptoms are present, conservative management (e.g., reassurance, topical estrogen in postmenopausal women, or addressing underlying infections) is first-line. Intervention should only be considered after thorough evaluation—including speculum examination, Pap smear, HPV testing, and colposcopy if indicated—and only when symptoms persist despite conservative measures and are definitively attributable to the ectropion itself.

When experiencing acute dental pain, prompt and appropriate management is essential—not only for symptom relief but also to avoid delaying diagnosis of potentially serious underlying conditions. While over-the-counter analgesics such as ibuprofen (400–600 mg) or acetaminophen (500–1000 mg) are often effective for mild-to-moderate odontogenic pain, they address symptoms only and do not resolve the cause. Topical benzocaine gels may provide transient localized relief but should be used cautiously—especially in children—due to risks of methemoglobinemia. Cold compresses applied externally to the affected side of the face can help reduce inflammation and numb nerve endings, offering short-term comfort. However, it is critically important to recognize that no home remedy substitutes for professional dental evaluation. Persistent, severe, or worsening tooth pain—particularly when accompanied by swelling, fever, trismus (limited mouth opening), or systemic signs—may indicate an abscess, cellulitis, or other urgent pathology requiring clinical intervention, including possible drainage, antibiotics, or definitive dental treatment such as root canal therapy or extraction. Delaying care increases the risk of complications, including sepsis or airway compromise. Therefore, patients should seek timely consultation with a dentist or oral surgeon for accurate diagnosis and evidence-based management.

Yes, pregnant individuals can generally use insect repellents safely, but it is important to choose products with active ingredients that have been well-studied and approved for use during pregnancy. The U.S. Centers for Disease Control and Prevention (CDC) and the American College of Obstetricians and Gynecologists (ACOG) recommend EPA-registered repellents containing DEET (N,N-diethyl-meta-toluamide), picaridin (also known as icaridin or KBR 3023), IR3535 (3-[N-butyl-N-acetyl]-aminopropionic acid, ethyl ester), or oil of lemon eucalyptus (OLE) or its synthetic derivative para-menthane-diol (PMD). These ingredients have demonstrated favorable safety profiles in human studies when used as directed.

DEET remains the most extensively researched repellent for use in pregnancy; multiple observational studies have not identified increased risks of adverse pregnancy outcomes—including congenital anomalies, preterm birth, or low birth weight—when used appropriately. Picaridin and IR3535 are also considered safe alternatives with robust efficacy and minimal systemic absorption. Oil of lemon eucalyptus and PMD are effective against mosquitoes and ticks but are not recommended for children under 3 years of age; however, they are considered acceptable for use during pregnancy when applied topically as directed.

It is advisable to avoid unproven or “natural” repellents lacking rigorous safety data in pregnancy—such as garlic, vitamin B1 supplements, ultrasonic devices, or essential oils like citronella, lavender, or tea tree oil used alone—as these lack consistent evidence of efficacy and may pose unknown risks due to variable composition and potential skin sensitization. Additionally, pregnant individuals should apply repellents only to exposed skin or clothing—not under clothing, on cuts or irritated skin, or near eyes and mouth—and wash hands after application. Reapplication should follow label instructions, especially after swimming or heavy sweating.

As mosquito-borne infections—including Zika virus, malaria, dengue, and chikungunya—pose significant risks to both maternal and fetal health, effective bite prevention is a critical component of prenatal care in endemic areas. Pregnant individuals should consult their obstetric provider before travel to high-risk regions and consider integrated vector control strategies, such as wearing long-sleeved clothing, using permethrin-treated apparel or bed nets, and staying in air-conditioned or screened accommodations.