39 results
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
Myopathies #ESR #CK #Differential ... diagnosis of myopathy ... Dermatomyositis #muscle ... #Muscle stiffness ... #Muscle pain
Myositis and Myopathies
Polymyositis 
 • Progressive, symmetric muscle weakness 
 • Elevated CK, +Anti-Jo, +Anti-Mi2
Dermatomyositis
load Drug-induced myopathy ... Gemcitabine Lupus Myopathy ... 5-15% of lupus myopathy ... #differential # ... diagnosis #comparison
Causes of Peripheral Weakness - With and Without Sensory Changes - Differential Diagnosis Algorithm
With Sensory Changes:
Sensory Changes - Differential ... Neuropathy - Atrophy, Fasciculations ... Oculomotor • Myopathy ... - Proximal muscle ... Sensory #Neurology #Differential
Idiopathic Inflammatory Myopathies - 
Dermatomyositis (DM), Immune-Mediated Necrotizing Myopathy (IMNM), Antisynthetase Syndrome (ASS), Inclusion Body Myositis
Immune-Mediated Necrotizing Myopathy ... Myopathies #Idiopathic #Myopathy ... #Comparison #Managment ... #Rheumatology #Differential
Causes of Peripheral Weakness without Sensory Changes - Differential Diagnosis Algorithm
No Objective Weakness
 • Cardio-pulmonary disease
Sensory Changes - Differential ... Neuropathy - Atrophy, Fasciculations ... • Congenital Myopathy ... - Proximal muscle ... Weakness #Neurology #Differential
Statin Induced Muscle Toxicity - Summary

Clinical Presentation:
 • Elevations of serum creatine kinase with proximal myalgia
Statin Induced Muscle ... Statin-Associated Muscle ... • The onset of muscle ... (IMNM) • Muscle ... #diagnosis #management
Causes of Proximal Muscle Weakness That May Mimic Inflammatory Myopathy
 • Central or peripheral neurologic disease
Causes of Proximal Muscle ... Mimic Inflammatory Myopathy ... Mitochondrial myopathy ... MuscleWeakness #Myopathy ... mimics #diagnosis #differential
Upper Versus Lower Motor Neuron Findings

Denervation near the target muscle fibers (lower motor neuron disease) results
near the target muscle ... stimulation leads to muscle ... activity produces fasciculation ... #MotorNeuron #Comparison
Creatine Kinase - Causes of Elevated CK Levels
Acute CK Elevation (Pain > Weakness):
 • RHABDOMYOLYSIS
Critical Illness Myopathy ... ): • PROXIMAL MUSCLE ... - Inflammatory myopathy ... polymyositis, necrotizing myopathy ... #Elevated #CK #differential
Spinal Cord Disorders - Differential Diagnosis Framework

Spinal cord neurological lesion:
Clinical findings:
 • Symptoms and signs below
Cord Disorders - Differential ... Hyperreflexia - Muscle ... - Radiation myelopathy ... twitching (fasciculations ... diagnosis #neurology #differential