Pruritus - No Primary Skin Lesion - Differential Diagnosis Algorithm Blood Glucose: • Diabetes Mellitus Liver Function Tests/Enzymes: • Cholestatic liver disease Creatinine & BUN: • Chronic renal failure/uremia TSH & T4: • Hypothyroidism • Hyperthyroidism CBC & Differential: • Lymphoma • Leukemia • Polycythemia rubra vera • Essential Throbocythemia • Myelodisplastic syndrome Psychiatric Disease: • Delusions of parasitosis #Pruritus #secondary #systemic #generalized #dermatology #Differential #Diagnosis #Algorithm #causes
