2734 results
Causes of Myocarditis 
1. Infectious Myocarditis
 • Bacterial - Staphylococcus, Streptococcus, Pneumococcus, Meningococcus, Gonococcus, Salmonella, Corynebacterium
toxoid, vaccines, serum ... polymyositis, myasthenia gravis ... Myocarditis #Causes #differential
Important Causes of Diplopia 
TIER 1-CRITICAL
Basilar artery thrombosis, Botulism, Basilar meningitis, Aneurysmn
TIER 2-EMERGENT:
Vertebral dissection, Myasthenia gravis,
dissection, Myasthenia gravis ... Thyroid myopathy (Graves ... mass #Diplopia #differential
Von Graefe's Sign - Graves' Eyelid Ophthalmopathy on Ocular Exam

Lagging of the upper eyelid on downward
Graefe's Sign - Graves ... the eye #Von #Graefes ... VonGraefes #Sign #Graves
Hypersensitivity: Summary
Type I Hypersensitivity:
 • Immunological Mediator: lgE
 • Immunological Target: Allergen Molecules
 • Ex: Antibiotic
reaction, Myasthenia Gravis ... , Graves' Disease ... glomerulonephritis, Serum
Differential diagnoses for the neuro-ophthalmologic finding of diplopia.
Neoplastic: 
 • Intraorbital meningioma 
 • Pituitary adenoma
Differential diagnoses ... • Myasthenia gravis ... lesion of MLF) • Graves ... #Diplopia #Differential
Myasthenia Gravis - Ptosis, Diplopia, Blurred Vision

Acute Myasthenic Crisis 
• Triggered by infection, medication 
• Respiratory
Myasthenia Gravis ... #Myasthenia #Gravis
Thyroid Disorders - Differential Diagnosis Algorithm
Hypothyroidism:
 • Hasimoto’s
 • Radioactive Iodine 
 • Hypopituitarism
 • Iodine
Thyroid Disorders - Differential ... Hyperthyroidism: • Graves ... Thyroid #Disorders #Differential
Hypo-osmolar Hypotonic HypoNatremia Algorithm (Serum Na+ < 135 meq/L, serum Osm < 275 mosm/kg)
Assess Volume Status,
HypoNatremia Algorithm (Serum ... + < 135 meq/L, serum ... Diagnosis #Nephrology #Differential
Hypocalcemia Laboratory Evaluation

Serum levels of PTH, phosphorus, 25-hydroxyvitamin D, and 1,25-dihydroxyvitamin D can help differentiate between
Laboratory Evaluation Serum ... dihydroxyvitamin D can help differentiate ... Endocrinology #Differential
Myasthenia Gravis
Signs, Symptoms and Testing - Likelihood Ratios
Does this patient have myasthenia gravis?
JAMA. 2005 Apr 20;293(15):1906-14.
Myasthenia Gravis ... have myasthenia gravis ... Diagnosis #Myasthenia #Gravis