1USMLE Step 2 Rapid Review+ Nikolsky’s sign.:Pemphigus vulgaris1.- Nikolsky’s sign.:Bullous pemphigoid2.1° causes of third-trimester bleeding.:Placentalabruption and placenta previa3.A 10-year-old boy presents with fever, weight loss, andnight sweats. Examination shows anteriormediastinal mass. Suspected diagnosis?:Non-Hodgkin’s lymphoma4.A 10-year-old child presents in status epilepticus, buther parents refuse treatment on religious grounds.:5.A 13-year-old male has a history of theft, vandalism,and violence toward family pets.:6.A 14-year-old girl presents with prolonged bleedingafter dental surgery and with menses, normal PT,normal or ↑ PTT, and ↑ bleeding time. Diagnosis?7.A 15-year-old pregnant girl requires hospitalization forpreeclampsia. Should her parents be informed?:No.Parental consent is not necessary for the medicaltreatment of pregnant minors8.A 16-year-old presents with an annular patch ofalopecia with broken-off, stubby hairs.:Alopeciaareata (autoimmune process)9.A 17-year-old female has left arm paralysis after herboyfriend dies in a car crash. No medical cause isfound.:Conversion disorder10.palpitations, diaphoresis, and fear of going crazy.:A 20-year-old man presents with a palpable flank massand hematuria. Ultrasound shows bilateral enlargedkidneys with cysts. Associated brain anomaly?:Cerebral berry aneurysms (AD PCKD)11.A 21-year-old male has three months of socialwithdrawal, worsening grades, flattened affect, andconcrete thinking.:Schizophreniform disorder(diagnosis of schizophrenia requires ≥ 6 months ofsymptoms)12.A 24-year-old male presents with soft white plaques onhis tongue and the back of his throat. Diagnosis?13.14.A 25-year-old Jewish male presents with pain andwatery diarrhea after meals. Exam shows fistulasbetween the bowel and skin and nodular lesions onhis tibias.:Crohn’s disease15.A 30-year-old woman has unpredictable urine loss.Examination is normal. Medical options?:Anticholinergics (oxybutynin) or β-adrenergics(metaproterenol) for urge incontinence.16.A 35-year-old male has recurrent episodes ofpalpitations, diaphoresis, and fear of going crazy.:17.18.