73 results
Autoimmune Myositis
Necrotizing myopathy is associated with higher CK levels, greater level of muscle weakness, less systemic
Autoimmune Myositis ... Dermatomyositis ... can present with rash ... /full triad at diagnosis ... #diagnosis #rheumatology
Causes of Rhabdomyolysis - Differential Diagnosis
 • Drugs & Toxins (Statins, alcohol, cocaine)
 • Direct Muscle
Causes of Rhabdomyolysis ... Damage (Trauma/crush ... Inflammatory Muscle Disease ... (myositis) • ... #Causes
ILD of Known Cause - Differential Diagnosis
Exposure:
 • Occupational: Asbestosis, Silicosis, Hypersensitivity, Pneumonitis
 • Treatment Related:
ILD of Known Cause ... - Differential Diagnosis ... Polymyositis, Dermatomyositis ... BrighamChiefs #ILD #Causes ... #Differential #Diagnosis
Causes of Neuromuscular Weakness
 • Spinal Cord: Demyelinating Disease (MS), Epidural abscess, Infarction, Syringomyelia, Tetanus, Transverse
Causes of Neuromuscular ... Demyelinating Disease ... Tetanus, Transverse Myelitis ... , Polymyositis/dermatomyositis ... #differential #diagnosis
Myositis and Myopathies
Polymyositis 
 • Progressive, symmetric muscle weakness 
 • Elevated CK, +Anti-Jo, +Anti-Mi2
Dermatomyositis
Myositis and Myopathies ... Anti-Jo, +Anti-Mi2 Dermatomyositis ... muscle weakness, rash ... Inclusion Body Myositis ... #differential #diagnosis
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
Joint Pain Rash ... infection Malar rash ... infection • Lyme disease ... migrans • Lyme disease ... #differential #diagnosis
Causes of Diffuse Lung Disease. 
Collagen vascular 
 - Scleroderma 
 - Rheumatoid arthritis 
 -
Causes of Diffuse ... Lung Disease. ... arthritis - Dermatomyositis ... chemotherapy #Diagnosis ... #Differential #Causes
I’M DAMN SHARP - Lupus Diagnosis Mnemonic
I  	 Immunoglobulins (Anti-dsDNA, Anti-Sm, Anti-phospholipid)
M 	 Malar Rash
D
SHARP - Lupus Diagnosis ... D Discoid Rash ... Antibody (ANA) M Mucositis ... Arthritis R Renal Disease ... #rheumatology #diagnosis
Interstitial Lung Diseases (ILD)
Exposure-Related ILD (a.k.a. extrinsic allergic alveolitis): 
 • Hypersensitivity pneumonitis, Farmer's lung, Bird
Interstitial Lung Diseases ... ILD caused by inhalation ... , Polymyositis-dermatomyositis ... #ILD #diagnosis ... differential #pulmonary #causes
ANTI-MDA5 DERMATOMYOSITIS

Cutaneous manifestations:
• Periorbital heliotrope (blue-purple) rash with edema
• Erythematous rash on the face, or the
ANTI-MDA5 DERMATOMYOSITIS ... (blue-purple) rash ... • Erythematous rash ... severity of the disease ... #dermatology #diagnosis