631 results
Causes of Proximal Muscle Weakness That May Mimic Inflammatory Myopathy
 • Central or peripheral neurologic disease
Mimic Inflammatory Myopathy ... Sarcoidosis • Infections ... Mitochondrial myopathy ... MuscleWeakness #Myopathy ... mimics #diagnosis #differential
Abdominal Distention - Differential Diagnostic Algorithm
Ascites
Bowel Dilatation
Other Causes
Mechanical Obstruction
 • Adhesions 60%
 • Volvulus 3%
 •
Abdominal Distention - Differential ... Inflammatory • Infectious ... • Ischemic Myopathic ... Scleroderma • Familial Myopathy ... Abdominal #Distention #Differential
Generalized Weakness - Differential Diagnosis Framework
"l feel weak":
 • Infectious: Influenza, EBV, PNA, Bacteremia, Sepsis
 •
Generalized Weakness - Differential ... feel weak": • Infectious ... I am weak": • Myopathy ... ↓, Malignancy, Infection ... Generalized #Weakness #Differential
Seronegative Inflammatory Arthritis - Differential Diagnosis
 • Seronegative Rheumatoid Arthritis 
 • Infectious Arthritis: Viral, Bacterial,
Inflammatory Arthritis - Differential ... Arthritis • Infectious ... , Inflammatory Myopathy ... #arthritides #Differential
Weakness - Differential Diagnosis Framework

Approach To Weakness:
 • Non-neuromuscular disorder (Cardiac, pulmonary etc)
 • CNS ->
Weakness - Differential ... Vasculitis • Infectious ... proximal weakness Myopathy ... mediated necrotizing myopathy ... #Weakness #Differential
Causes of Peripheral Weakness without Sensory Changes - Differential Diagnosis Algorithm
No Objective Weakness
 • Cardio-pulmonary disease
Sensory Changes - Differential ... Anemia • Chronic Infection ... • Congenital Myopathy ... Dermatomyositis • Viral infection ... Weakness #Neurology #Differential
Autoimmune Myositis - Differential Diagnosis Framework

Inflammatory Myopathies: Commonly symmetric proximal muscle weakness, no substantial muscle pain
Tenderness → Consider infectious ... NECROTIZING AUTOIMMUNE MYOPATHY ... syndrome • If myopathy ... ANTI-MITOCHONDRIAL MYOPATHY ... Autoimmune #Myositis #Myopathy
Myositis and Myopathies
#ESR #CK #Differential diagnosis of myopathy 
#Inflammatory #myopathies	#Dermatomyositis	
#muscle weakness
#Polymyositis	
#Inclusion body myositis
#Polymyalgia rheumatica	
#Fibromyalgia	
#Hypothyroid myopathy	
#Muscle stiffness
#Drug-induced
#ESR #CK #Differential ... diagnosis of myopathy ... #Hypothyroid myopathy ... Statin-induced myopathy ... Cocaine-induced myopathy
Idiopathic Inflammatory Myopathies - 
Dermatomyositis (DM), Immune-Mediated Necrotizing Myopathy (IMNM), Antisynthetase Syndrome (ASS), Inclusion Body Myositis
Idiopathic Inflammatory Myopathies ... Immune-Mediated Necrotizing Myopathy ... #Inflammatory #Myopathies ... #Idiopathic #Myopathy ... #Rheumatology #Differential
Myositis and Myopathies
Polymyositis 
 • Progressive, symmetric muscle weakness 
 • Elevated CK, +Anti-Jo, +Anti-Mi2
Dermatomyositis
rimmed vacuoles HIV myopathy ... load Drug-induced myopathy ... Gemcitabine Lupus Myopathy ... 5-15% of lupus myopathy ... #myopathy #differential