173 results
Idiopathic Inflammatory Myopathies - 
Dermatomyositis (DM), Immune-Mediated Necrotizing Myopathy (IMNM), Antisynthetase Syndrome (ASS), Inclusion Body Myositis
Idiopathic Inflammatory Myopathies ... - Dermatomyositis ... #Inflammatory #Myopathies ... #Idiopathic #Myopathy ... Comparison #Managment #algorithm
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
Myositis and Myopathies ... #Inflammatory #myopathies ... #Dermatomyositis ... #Hypothyroid myopathy ... Statin-induced myopathy
Myositis and Myopathies
Polymyositis 
 • Progressive, symmetric muscle weakness 
 • Elevated CK, +Anti-Jo, +Anti-Mi2
Dermatomyositis
Myositis and Myopathies ... Anti-Jo, +Anti-Mi2 Dermatomyositis ... load Drug-induced myopathy ... 5-15% of lupus myopathy ... #myopathy #differential
Autoimmune Myositis
Necrotizing myopathy is associated with higher CK levels, greater level of muscle weakness, less systemic
Myositis Necrotizing myopathy ... Dermatomyositis ... Classic triad of ILD ... and anti-HMGCR myopathy
Creatine Kinase - Causes of Elevated CK Levels
Acute CK Elevation (Pain > Weakness):
 • RHABDOMYOLYSIS
Critical Illness Myopathy ... - Metabolic Myopathies ... - Inflammatory myopathy ... : dermatomyositis ... polymyositis, necrotizing myopathy
Interstitial Lung Diseases (ILD)
Exposure-Related ILD (a.k.a. extrinsic allergic alveolitis): 
 • Hypersensitivity pneumonitis, Farmer's lung, Bird
Lung Diseases (ILD ... Exposure-Related ILD ... ILD caused by inhalation ... Methotrexate ILD ... , Polymyositis-dermatomyositis
Statin Induced Muscle Toxicity - Summary

Clinical Presentation:
 • Elevations of serum creatine kinase with proximal myalgia
• Inflammatory myopathy ... polymyositis, dermatomyositis ... → Inflammatory myopathies ... Statin-induced myopathy ... - Necrotizing myopathy
ILD of Known Cause - Differential Diagnosis
Exposure:
 • Occupational: Asbestosis, Silicosis, Hypersensitivity, Pneumonitis
 • Treatment Related:
ILD of Known Cause ... Polymyositis, Dermatomyositis ... BrighamChiefs #ILD
Causes of Peripheral Weakness without Sensory Changes - Differential Diagnosis Algorithm
No Objective Weakness
 • Cardio-pulmonary disease
Differential Diagnosis Algorithm ... • Congenital Myopathy ... Statin Toxicity • Dermatomyositis ... Differential #Diagnosis #Algorithm
Dermatomyositis
A middle-aged man describes progressive difficulty combing his hair and rising from a seated position over
Dermatomyositis ... This is a case of dermatomyositis ... usually indicates myopathy ... AndreMansoor #Dermatomyositis