USMLE Practice Questions (Timer Mode)

Time Left: 300 seconds

1. A 60-year-old male presents with chest pain on exertion relieved by rest. What is the most likely diagnosis?

A. Pericarditis
B. Stable angina
C. Myocarditis
D. Aortic dissection

Answer: B. Stable angina
Explanation: Exertional chest pain relieved by rest is classic for ischemic heart disease due to fixed coronary obstruction.

2. A patient presents with sudden unilateral weakness and slurred speech. What is the most likely diagnosis?

A. Migraine
B. Stroke
C. Seizure
D. Brain tumor

Answer: B. Stroke
Explanation: Acute focal neurological deficits suggest cerebrovascular accident.

3. A chronic smoker presents with progressive dyspnea and chronic cough. What is the most likely condition?

A. Asthma
B. COPD
C. Pneumonia
D. Tuberculosis

Answer: B. COPD
Explanation: Smoking is the main risk factor for chronic obstructive pulmonary disease.

4. A patient has fever, productive cough, and chest pain. Which diagnosis is most likely?

A. Asthma
B. Pneumonia
C. COPD
D. Lung cancer

Answer: B. Pneumonia
Explanation: Classic symptoms of lower respiratory infection include fever and productive cough.

5. A newborn presents with difficulty breathing immediately after birth. What is the likely issue?

A. Asthma
B. Neonatal condition
C. COPD
D. Tuberculosis

Answer: B. Neonatal condition
Explanation: Birth-related complications like asphyxia can cause immediate respiratory distress.

6. A smoker presents with weight loss and persistent cough. What is most concerning?

A. Asthma
B. Lung cancer
C. Bronchitis
D. Pneumonia

Answer: B. Lung cancer
Explanation: Red flags include weight loss and chronic cough in smokers.

7. A patient has progressive memory loss affecting daily life. Most likely diagnosis?

A. Depression
B. Alzheimer’s disease
C. Stroke
D. Parkinson’s

Answer: B. Alzheimer’s disease
Explanation: Gradual cognitive decline is characteristic of Alzheimer’s.

8. A child presents with severe dehydration and diarrhea. What is the main concern?

A. Hypertension
B. Diarrhoeal disease
C. COPD
D. Stroke

Answer: B. Diarrhoeal disease
Explanation: Major cause of mortality in children due to dehydration.

9. A patient has high fasting blood glucose. What is the diagnosis?

A. Hypertension
B. Diabetes mellitus
C. Stroke
D. COPD

Answer: B. Diabetes mellitus
Explanation: Elevated blood glucose indicates diabetes.