Ravi Singh K @rav7ks
1.2M 744 368
Academic Hospitalist and Associate Program Director @SinaiBmoreIMRes, Medicine clerkship director GW School of Medicine and Health Sciences RMC at Sinai, Hopkins Medicine Clerkship Site Director, Clinical reasoning,Simulation and POCUS enthusiast - https://twitter.com/rav7ks
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Hair Loss (Alopecia) - General (Diffuse and Focal) Differential Diagnosis Algorithm

DIFFUSE
Scarring - Irreversible-biopsy required
 • Lupus
Diffuse and Focal) Differential ... Diagnosis Algorithm ... planopilaris Pattern ... #Diagnosis #Algorithm ... #causes
Causes of Hyperferritinemia - Differential Diagnosis
Ferritin > 1000
Ferritin is the storage form of iron. Increased hepcidin
Causes of Hyperferritinemia ... - Differential ... Most Common Causes ... saturation to differentiate ... Hyperferritinemia #Differential
Hypercalcemia - Differential Diagnosis Algorithm
Elevated PTH (High or normal):
 • Primary Hyperparathyroidism
 • Familial Hypocalciuric Hypercalcemia
Low
Hypercalcemia - Differential ... Diagnosis Algorithm ... Hypercalcemia #Differential ... #Diagnosis #Algorithm ... #causes #endocrinology
Hypokalemia - Differential Diagnosis Algorithm
Extra-renal Losses:
 • Normal Acid-Base: Low intake
 • Metabolic acidosis: Gl tract
Hypokalemia - Differential ... Diagnosis Algorithm ... #Hypokalemia #Differential ... #Diagnosis #Algorithm ... #causes #potassium
Causes of Tremors - Movement Disorders - Differential Diagnosis Algorithm
Action Tremor - Occurs During Voluntary Muscle
Causes of Tremors ... Movement Disorders - Differential ... Diagnosis Algorithm ... #Diagnosis #Algorithm ... #Causes
Antinuclear Antibodies (ANA)
ANA or Anti-NucIear Antibody refers to antibodies against antigens in the nucleus → like
serial dilution, a pattern ... significant • Pattern ... : The ANA patterns ... not specific ANA Patterns ... rheumatology #diagnosis #differential
Eosinophils (Eos) and hypereosinophilia (HE)
Caused by eosinophilopoietic cytokines
Common causes:
 - Drug reaction
 - Helminth infection
 -
hypereosinophilia (HE) Caused ... cytokines Common causes ... disease Rare causes ... hypereosinophilia #HE #Differential ... #Diagnosis #Causes
ANA Patterns and Associated Rheumatic Diseases:
 • Homogeneous: Systemic lupus erythematosus (SLE), Mixed connective tissue disease
ANA Patterns and ... Antibodies #ANA #patterns ... rheumatology #diagnosis #differential
Algorithm and Differential Diagnosis of Tremor #Diagnosis #IM #PrimaryCare #Neuro #Tremor #Action #Rest #Differential #Algorithm #Comparison
Algorithm and Differential ... #Action #Rest #Differential ... #Algorithm #Comparison
Infectious Joint Pain - Differential Diagnosis Algorithm 
Polyarticular Join Pain
 • Viral Myalgia
 • Viral Arthritis
Infectious Joint Pain - Differential ... Diagnosis Algorithm ... JointPain #MSK #Differential ... #Diagnosis #Algorithm ... #Orthopedics #Causes