38 results
Causes of Proximal Muscle Weakness That May Mimic Inflammatory Myopathy
 • Central or peripheral neurologic disease
Causes of Proximal ... Muscle Weakness ... Mimic Inflammatory Myopathy ... Mitochondrial myopathy ... MuscleWeakness #Myopathy
Myelopathy - Injury to the entire spinal cord - Signs and Symptoms
 • Ataxia (early sign)
Myelopathy - Injury ... • Gross motor weakness ... early signs) #Myelopathy ... signs #symptoms #msk
Causes of Neuromuscular Weakness
 • Spinal Cord: Demyelinating Disease (MS), Epidural abscess, Infarction, Syringomyelia, Tetanus, Transverse
Causes of Neuromuscular ... Weakness • Spinal ... Demyelinating Disease (MS ... Guillain-Barre syndrome ... Mitochondrial myopathy
Statin Induced Muscle Toxicity - Summary

Clinical Presentation:
 • Elevations of serum creatine kinase with proximal myalgia
proximal myalgia and weakness ... symmetric muscle weakness ... • Inflammatory myopathy ... Guillain-Barré syndrome ... antisynthetase syndrome
Creatine Kinase - Causes of Elevated CK Levels
Acute CK Elevation (Pain > Weakness):
 • RHABDOMYOLYSIS
Creatine Kinase - Causes ... Critical Illness Myopathy ... Subacute to Chronic Causes ... - Inflammatory myopathy ... polymyositis, necrotizing myopathy
Systemic Lupus Erythematosus (SLE): Musculoskeletal Manifestations

 • Immune Complex Deposition
    - Arthralgia, Arthritis
80%) - Proximal Weakness ... 10%) - Proximal Weakness ... femoral heads • Myopathy ... (Also caused by ... Erythematosus #SLE #MSK
Causes of Peripheral Weakness without Sensory Changes - Differential Diagnosis Algorithm
No Objective Weakness
 • Cardio-pulmonary disease
Causes of Peripheral ... Weakness without ... Lambert-Eaton Myasthenic Syndrome ... • Congenital Myopathy ... Diagnosis #Algorithm #Causes
Causes of Peripheral Weakness - With and Without Sensory Changes - Differential Diagnosis Algorithm
With Sensory Changes:
Causes of Peripheral ... Weakness - With ... • No Objective Weakness ... Oculomotor • Myopathy ... Diagnosis #Algorithm #Causes
Autoimmune Myositis
Necrotizing myopathy is associated with higher CK levels, greater level of muscle weakness, less systemic
Myositis Necrotizing myopathy ... level of muscle weakness ... anti-synthetase syndrome ... and anti-HMGCR myopathy ... have significant weakness
Symptoms of Hypophosphatemia
 • CNS: Seizures, Delirium, Paresthesias, Central & extrapontine myelinolysis, Hallucinations, Fatigue
 • Hematologic:
Bone pain • MSK ... : Proximal myopathy ... Diaphragmatic weakness