1378 results
Myositis Specific Antibodies (MSAs)

Dermatomyositis: MDA5, TIF1y, NXP2, Mi-2, SAE
Anti-Synthetase Syndrome: Jo-1, PL7, PL12, EJ, OJ
Immune Mediated
Myositis Specific ... Anti-Synthetase Syndrome ... Inclusion Body Myositis ... MithuRheum #Myositis
Autoimmune Myositis
Necrotizing myopathy is associated with higher CK levels, greater level of muscle weakness, less systemic
Autoimmune Myositis ... anti-synthetase syndrome ... triad of ILD, myositis ... #Autoimmune #Myositis
Pulmonary Renal Syndromes and Mimics - Differential Diagnosis Framework
Diffuse alveolar hemorrhage + rapidly progressive glomerulonephritis
90%:
 -
Pulmonary Renal Syndromes ... Antiphospholipid Syndrome ... , Inflammatory Myositis ... differentiation syndrome ... Pulmonary #Renal #Syndromes
Weakness - Differential Diagnosis Framework

Approach To Weakness:
 • Non-neuromuscular disorder (Cardiac, pulmonary etc)
 • CNS ->
• Acute stroke syndromes ... Paraneoplastic syndrome ... Lambert-Eaton - Isaacs' syndrome ... Inclusion body myositis ... anti-RNP - (Myositis
Idiopathic Inflammatory Myopathies - 
Dermatomyositis (DM), Immune-Mediated Necrotizing Myopathy (IMNM), Antisynthetase Syndrome (ASS), Inclusion Body Myositis
Antisynthetase Syndrome ... Inclusion Body Myositis
Differential Diagnosis of Necrotizing Fasciitis: 

Cellulitis, 
Superficial abscess, 
Deep vein thrombosis 
(see phlegmasia cerulea dolerans), 
Compartment
Compartment syndrome ... Necrotizing myositis
Important Causes of Diplopia 
TIER 1-CRITICAL
Basilar artery thrombosis, Botulism, Basilar meningitis, Aneurysmn
TIER 2-EMERGENT:
Vertebral dissection, Myasthenia gravis,
, Orbital apex syndrome ... Miller-Fisher syndrome ... neuropathy, Orbital myositis
Neuromyelitis Optica (NMO) - Clinical Manifestations
 • Optic neuritis: Reduced visual acuity, ranging from mild to
Other brainstem syndromes ... Hypothalamic or thalamic syndromes ... • Transverse myelitis ... positive NMO only): Myositis ... erythematosus, Sjögren syndrome
43 yo M w L ant neck swelling, pain, fever x 2 d. Got the Dx?

...

Infectious
Infectious SCM myositis ... w Lemierre's syndrome ... POCUS #Neck #SCM #Myositis ... #Lemierres #Syndrome
Causes of Rhabdomyolysis - Differential Diagnosis
 • Drugs & Toxins (Statins, alcohol, cocaine)
 • Direct Muscle
malignant neuroleptic syndrome ... Muscle Disease (myositis