Questões de USMLE

A 9-year-old boy from Nigeria with sickle cell disease presents with fever (38.9°C), productive cough, and pleuritic chest pain. Vital signs show HR 112, RR 24, BP 105/68, SpO2 94%…

A 34-year-old woman with HIV/AIDS (CD4 count 85 cells/μL) presents with progressive dyspnea, fever, and dry cough for 3 weeks. Vital signs show temperature 38.5°C, heart rate 108/m…

A 42-year-old man with AIDS (CD4 count 35 cells/μL) presents with progressive headache, fever (38.9°C), and blurred vision for 2 weeks. Vital signs show BP 118/76, HR 98, RR 16, Sp…

A 3-year-old boy who received BCG vaccine abroad develops disseminated infection with fever to 38.5°C, HR 108/min, and hepatosplenomegaly. He subsequently presents with recurrent S…

A 48-year-old woman receives cosmetic botulinum toxin injections. Five days later, she develops diplopia, ptosis, dysphagia, and descending flaccid paralysis. Vital signs: BP 128/8…

A 22-year-old woman at 8 weeks gestation presents to clinic with fever (38.8°C), arthralgias in her hands and feet, and a maculopapular rash that began on her face 2 days ago and i…

A 45-year-old man from the southwestern United States presents with fever, weight loss, and cough productive of blood. Chest X-ray reveals a solitary cavitary lesion in the right u…

A 6-year-old boy presents with recurrent sinopulmonary infections and chronic ulcerating skin lesions caused by respiratory viruses over the past 2 years. Vital signs show HR 102/m…

A 32-year-old woman with a 3-month history of progressive exertional dyspnea and nonproductive cough presents to the emergency department. She reports unintentional weight loss and…

A 19-year-old man presents with arthralgias and malar rash. Vital signs: BP 128/82, HR 92, RR 16, Temp 37.2°C, SpO2 98%. Labs reveal ANA 1:640 with anti-dsDNA antibodies; complemen…

A 55-year-old man with HIV infection has been on antiretroviral therapy for 3 years with a CD4+ count of 487 cells/μL and undetectable viral load until 6 months ago. He now present…

A 28-year-old man recently returned from caving in Arizona presents with a 2-week history of productive cough and fever (38.5°C). Vital signs show HR 102 bpm, RR 20/min, BP 118/76 …

A 13-month-old girl with no fever (37.2°C), normal vital signs (HR 110/min, RR 28/min, BP 95/60 mmHg), and normal oxygen saturation receives a Haemophilus influenzae type b conjuga…

A 4-year-old boy with recurrent Staphylococcus aureus and Streptococcus pneumoniae infections presents with fever (38.2°C), lymphadenopathy, and mild splenomegaly. Vital signs show…

A 6-year-old boy from rural Peru presents with fatigue, abdominal distension, and intermittent diarrhea for 6 months. Stool microscopy reveals 44-76 μm oval ova with a mucoid plug …

A 28-year-old immunocompetent man from Ohio develops fever, myalgias, and a dry cough that progresses over 4 weeks. He works in construction and was recently exposed to bird droppi…

A 55-year-old man with type 2 diabetes and poor glucose control presents with a black, necrotic lesion on his hard palate that extends into surrounding tissues. He reports rapid on…

A 17-year-old girl receives a tetanus booster immunization. Within 48 hours, she develops localized arm erythema (BP 118/76, HR 82, RR 16, Temp 38.2°C, SpO2 98%). Serum analysis sh…

A 33-year-old man received equine-derived antitoxin following a snakebite. Eight days later, he presents with fever (38.8°C), diffuse arthralgias, urticarial rash, and mild dyspnea…

A 45-year-old construction worker from Arizona presents with 2-week fever (38.5°C), productive cough, and erythema nodosum. Vitals show HR 102 bpm, RR 22, SpO2 98% on room air. Che…

A 6-year-old boy presents with a pruritic rash on exposed skin areas after playing in a grassy field. Vital signs are normal (BP 95/60, HR 98, RR 20, Temp 37.2°C, SpO2 98%). Linear…

A 41-year-old HIV-positive man with CD4 count of 85 cells/μL presents with fever (38.9°C), headache, and neck stiffness for 2 weeks. Vital signs show BP 110/70 mmHg, HR 98/min, RR …

A 4-year-old from rural Mexico presents with progressive abdominal distension, malnutrition, and pallor. Vital signs: HR 115, RR 24, BP 95/60. Laboratory studies show hemoglobin 7.…

A 34-year-old woman from Brazil presents with fever (38.2°C), multiple ulcerated lesions on her lip and face, and enlarged regional lymph nodes. Vital signs show BP 118/76, HR 92, …