Symptoms and Signs - ​Differential Diagnosis of Back Pain

Symptoms and Signs - ​Differential Diagnosis of Back Pain • Vascular: leaking aortic aneurysm, subarachnoid or spinal hemorrhage/infarction • Trauma: injury to bone, joint, or ligament • Renal: hydronephrosis, calculus, neoplasm, renal infarction, pyelone





Symptoms and Signs - Differential Diagnosis of Balanitis

Symptoms and Signs - Differential Diagnosis of Balanitis • Reiter’s syndrome • Psoriasis • Lichen planus • Leukoplakia • Erythroplasia of Queyrat • Carcinoma of the penis • Balanitis xerotica obliterans


​Symptoms and Signs - Differential Diagnosis of Ballism

​Symptoms and Signs - Differential Diagnosis of Ballism • Nonketotic hyperosmolar state • Medications (e.g., dopamine agonists, phenytoin) • CNS neoplasm (primary or metastatic) • Cerebral infarction or hemorrhage


Symptoms and Signs - Differential Diagnosis of Barrett’s Esophagus

​Symptoms and Signs - Differential Diagnosis of Barrett’s Esophagus • Stricture or Schatzki’s ring • Peptic ulcer disease • Malignant neoplasm • Hiatal hernia • Gastroesophageal reflux disease (GERD), uncomplicated • Gastritis • Erosive esophagitis • Angi



​Symptoms and Signs - Differential Diagnosis of Basal Cell Carcinoma

​Symptoms and Signs - Differential Diagnosis of Basal Cell Carcinoma • Xeroderma pigmentosum • Wart • Squamous cell carcinoma • Seborrheic keratosis • Sebaceous hyperplasia • Psoriasis • Molluscum contagiosum • Melanoma (pigmented basal cell carcinoma) •