Ravi Singh K @rav7ks
1.2M 745 368
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
and Focal) Differential ... Diagnosis Algorithm ... planopilaris Pattern ... #Diagnosis #Algorithm ... #causes
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
Hypercalcemia - Differential Diagnosis Algorithm
Elevated PTH (High or normal):
 • Primary Hyperparathyroidism
 • Familial Hypocalciuric Hypercalcemia
Low
Hypercalcemia - Differential ... Diagnosis Algorithm ... Hypercalcemia Low ... #Diagnosis #Algorithm ... #causes #endocrinology
ANA Patterns and Associated Rheumatic Diseases:
 • Homogeneous: Systemic lupus erythematosus (SLE), Mixed connective tissue disease
ANA Patterns and ... • Nucleolar: Diffuse ... Antibodies #ANA #patterns ... #rheumatology #diagnosis ... #differential
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
High-Res Chest CT Patterns ... - Differential ... Diagnosis Framework ... Honeycombing - See Low ... #Differential #
Antinuclear Antibodies (ANA)
ANA or Anti-NucIear Antibody refers to antibodies against antigens in the nucleus → like
significant • Pattern ... : The ANA patterns ... • Nucleolar: Diffuse ... #rheumatology #diagnosis ... #differential
Reversed Halo Sign - Infectious and Non-Infectious Differential Diagnosis
Definition: A focal rounded area of GGO surrounded
Non-Infectious Differential ... Diagnosis Definition ... • Infectious Causes ... Histoplasmosis, Slow-resolving ... Non-Infectious Causes
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
Pancytopenia - Workup and Differential Diagnosis Algorithm
Consumption Disorders
 1. Autoimmune Mediated Pancytopenia
 2. Splenic Sequestration
Peripheral Destruction
Pancytopenia - Workup and Differential ... Diagnosis Algorithm ... Production - Flow ... Pancytopenia #Workup #Differential ... #Diagnosis #Algorithm
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