Question 1

Chen Yong, Associate Chief Physician, Shandong Provincial Hospital

Accepted Answer

Dr. Chen Yong is a Deputy Chief Physician specializing in internal medicine at Shandong Provincial Hospital, a tertiary comprehensive medical center affiliated with Shandong University and one of the leading hospitals in East China. As a Deputy Chief Physician, he holds a senior clinical academic rank conferred by China’s national health authority, reflecting extensive clinical experience, scholarly contributions, and leadership in patient care—typically requiring over 15 years of post-residency practice, publication of peer-reviewed research, and supervision of junior physicians and trainees. His clinical focus includes the diagnosis and management of complex cardiovascular, metabolic, and geriatric conditions, with particular expertise in hypertension, heart failure, diabetes-related complications, and multimorbidity in older adults. Dr. Chen actively participates in regional clinical guidelines development, undergraduate and postgraduate medical education, and translational research

Question 2

How is lactose intolerance diagnosed?

Accepted Answer

Lactose intolerance can be diagnosed through several clinically validated methods, each with distinct advantages and limitations. The most commonly used and evidence-based diagnostic tests include the hydrogen breath test, lactose tolerance test, and stool acidity test—particularly in infants and young children. The hydrogen breath test is considered the gold standard: after an overnight fast, the patient consumes a standardized lactose solution (typically 25–50 g), and breath samples are collec

Question 3

What causes excessive and foul-smelling flatulence?

Accepted Answer

Excessive flatulence—particularly when accompanied by a strong, unpleasant odor—is commonly caused by the fermentation of undigested carbohydrates by gut bacteria in the large intestine. This process produces gases such as hydrogen, methane, and hydrogen sulfide, the latter being primarily responsible for the characteristic foul smell. Common dietary contributors include high-fiber foods (e.g., beans, lentils, cruciferous vegetables like broccoli and cabbage), dairy products (in individuals with

Question 4

What diseases should be considered with frequent belching?

Accepted Answer

Frequent belching—also known as eructation—can be a benign, functional symptom related to swallowed air (aerophagia), dietary habits (e.g., carbonated beverages, chewing gum, eating too quickly), or mild gastroesophageal reflux disease (GERD). However, when belching is persistent, new-onset, worsening, or accompanied by “red flag” symptoms, it warrants clinical evaluation to rule out underlying organic pathology.

Conditions that merit particular attention include gastroesophageal reflux disease

Question 5

What causes daily loose stools?

Accepted Answer

Consistently loose or watery stools—defined as having three or more unformed, mushy, or liquid bowel movements per day for at least four weeks—are clinically referred to as chronic diarrhea. This symptom is not a disease in itself but rather a sign of an underlying physiological disturbance that may involve the gastrointestinal tract, systemic metabolism, immune function, or neuroendocrine regulation.

Common causes include irritable bowel syndrome with diarrhea (IBS-D), which is a functional di

Question 6

What could cause intermittent pain on the left side of the abdomen?

Accepted Answer

Intermittent left-sided abdominal pain can arise from a wide range of causes, spanning gastrointestinal, genitourinary, musculoskeletal, and gynecologic systems. The specific location—left upper quadrant (LUQ) versus left lower quadrant (LLQ)—and associated symptoms are critical for narrowing the differential diagnosis.

In the left upper quadrant, common etiologies include gastric or duodenal ulcers (especially if pain is burning, related to meals, or accompanied by nausea or hematemesis), sple

Question 7

Why do I feel a distressing sensation of blockage or fullness in my stomach?

Accepted Answer

Feeling a sensation of “stomach blockage” or heaviness—often described as fullness, pressure, tightness, or discomfort in the upper abdomen—is a common symptom with multiple potential causes. Medically, this is frequently referred to as epigastric discomfort or early satiety when it occurs soon after eating. It may stem from functional gastrointestinal disorders such as functional dyspepsia, where no structural abnormality is found but gastric motility or visceral sensitivity is altered. Other c

Chen Yong, Associate Chief Physician, Shandong Provincial Hospital

Related Questions

AI Medical Advisor

Chen Yong, Associate Chief Physician, Shandong Provincial Hospital

Related Content

Related Questions

How is lactose intolerance diagnosed?

What causes excessive and foul-smelling flatulence?

What diseases should be considered with frequent belching?

What causes daily loose stools?

What could cause intermittent pain on the left side of the abdomen?

Why do I feel a distressing sensation of blockage or fullness in my stomach?

AI Medical Advisor