40 results
Myositis and Myopathies
Polymyositis 
 • Progressive, symmetric muscle weakness 
 • Elevated CK, +Anti-Jo, +Anti-Mi2
Dermatomyositis
Myositis and Myopathies ... rash • Elevated CK ... Inclusion Body Myositis ... , +Anti-dsDNA, Myositis ... BostonChiefs #Myositis
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 ... #ESR #CK #Differential ... Dermatomyositis #muscle ... Inclusion body myositis ... Hypothyroid myopathy #Muscle
Systemic Lupus Erythematosus (SLE): Musculoskeletal Manifestations

 • Immune Complex Deposition
    - Arthralgia, Arthritis
Weakness, Normal CK ... - Myositis ... Weakness, Incr CK ... Erythematosus #SLE #MSK ... pathophysiology #signs #symptoms
Autoimmune Myositis
Necrotizing myopathy is associated with higher CK levels, greater level of muscle weakness, less systemic
Autoimmune Myositis ... associated with higher CK ... greater level of muscle ... less systemic symptoms ... triad of ILD, myositis
Statin Induced Muscle Toxicity - Summary

Clinical Presentation:
 • Elevations of serum creatine kinase with proximal myalgia
Symptoms (SAMS) ... symptoms: weeks ... • Myalgia • Myositis ... inclusion body myositis ... Diagnosis: • CK
Creatine Kinase - Causes of Elevated CK Levels
Acute CK Elevation (Pain > Weakness):
 • RHABDOMYOLYSIS
Causes of Elevated CK ... Levels Acute CK ... ): • PROXIMAL MUSCLE ... Inclusion body myositis ... Kinase #Elevated #CK
Radiculopathy: Signs and Symptoms
 • Back/Neck Pain
 • Decr Range of motion
 • Abnormal posturing
 •
Radiculopathy: Signs and Symptoms ... can happen) • Muscle ... reflexes (at those muscles ... Radiculopathy #MSK ... diagnosis #signs #symptoms
Autoimmune Myositis - Differential Diagnosis Framework

Inflammatory Myopathies: Commonly symmetric proximal muscle weakness, no substantial muscle pain
Autoimmune Myositis ... Tests: • Measure CK ... (symmetric) • CK ... weakness • CK ... Very high serum CK
Hypothyroid Myopathy
Very common (up to 80% ) in patients with hypothyroidism
Pathophysiology:
 • T4 deficiency leads to
which impairs musde ... slow-twitching Type I muscle ... Asymptomatic CK ... proximal myopathy → Muscle ... pathophysiology #signs #symptoms
Chronic Joint Pain - Differential Diagnosis Algorithm 
Intra-Articular
 - Bone
     • Stress
Fasciitis) - Muscle ... Delayed Onset Muscle ... Fibromyalgia • Myositis ... Intraarticular #MSK