14 results
Myasthenia Gravis
Signs, Symptoms and Testing - Likelihood Ratios
Does this patient have myasthenia gravis?
JAMA. 2005 Apr 20;293(15):1906-14.
Myasthenia Gravis ... , Symptoms and Testing ... eye movements #Diagnosis ... LikelihoodRatios #PhysicalExam ... #Testing
Diagnosis of Myasthenia Gravis - Physical Exam Maneuvers
 • Sustained lateral gaze for seconds to elicit
Diagnosis of Myasthenia ... ptotic eyelid will cause ... Hering's law) • Testing ... #Gravis #PhysicalExam ... #Maneuvers #Diagnosis
Causes of Neuromuscular Weakness
 • Spinal Cord: Demyelinating Disease (MS), Epidural abscess, Infarction, Syringomyelia, Tetanus, Transverse
Causes of Neuromuscular ... Eaton Syndrome, Myasthenia ... poisoning, Scorpion sting ... Neuromuscular #Weakness #Causes ... #differential #diagnosis
Diagnostic Testing for Meningitis
History:
 • Triad: Fever, neck stiffness, and altered mental status
 • Sens: 44%
Diagnostic Testing ... : Non-specific Kernig ... #Meningitis #diagnosis ... #testing #physicalexam ... #Specificity #diagnosis
Pediatric Causes of Abdominal Pain

Surgical:
 - Acute appendicitis 
 - Intestinal obstruction including intussusception 
 -
Pediatric Causes ... - Inguinal hernia ... Torsion of the testis ... Pain #Pediatrics #Causes ... #Differential #Diagnosis
Acute and Chronic Causes of Dyspnea - Differential Diagnosis
Pulmonary/Chest Wall:
 • Acute: Trauma, COPD exacerbation, Asthma
Acute and Chronic Causes ... - Differential Diagnosis ... Abdominal wall hernia ... Neuromuscular disease (eg myasthenia ... Acute #Chronic #Causes
The head impulse test (HIT) result is positive (abnormal) in nearly all patients with a peripheral
with a peripheral cause ... with a central cause ... #Diagnosis #PhysicalExam ... #HeadImpulse #Testing
Chronic Abdominal Pain Causes - Differential Diagnosis Framework

Many patients with chronic abdominal pain have had prior
- Differential Diagnosis ... did not yield a diagnosis ... , physical and testing ... Femoral/Inguinal hernia ... • Abdominal hernia
Differential Diagnosis of Pulmonary Eosinophilia
Infection:
 • Helminthic: Loffler syndrome (Ascaris, hookworm, Strongyloides), Tropical pulmonary eosinophilia (lymphatic
Differential Diagnosis ... Crack cocaine, Heroin ... Tobacco, Scorpion sting ... #Differential #Diagnosis ... #causes
Causes of Myocarditis 
1. Infectious Myocarditis
 • Bacterial - Staphylococcus, Streptococcus, Pneumococcus, Meningococcus, Gonococcus, Salmonella, Corynebacterium
Causes of Myocarditis ... polymyositis, myasthenia ... more commonly cause ... Miscellaneous - Scorpion sting ... #differential #diagnosis