12 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Biceps Jerk - ... Erb's Palsy is caused ... palsy" is a common cause ... Tunnel Syndrome - Causes ... Dislocation - May cause
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Ankle - S1 • Biceps ... - C5, C6 • Triceps ... - C6, C7, C8 ... Commonly caused
Causes of Relative Bradycardia - Note the propensity for intracellular organisms.
Infectious: 
Legionella, Psittacosis, Q fever, Typhoid
Causes of Relative ... : ß-blockers, CNS ... #bradycardia #Causes ... differential #diagnosis #infectiousdiseases
CNS Infection in HIV / AIDS - Differential Diagnosis Framework

Principles of HIV-Associated CNS Opportunistic Infections:
 •
CNS Infection in ... HIV-Associated CNS ... present in 15% of cases ... Demyelinating disease caused ... opportunistic #InfectiousDiseases
Disseminated Intravascular Coagulation (DIC) Overview

Increased Clotting and Consumption of Clotting Factors

Findings:
 • Bleeding
 • Recent history
levels of factors VII ... Thromboembolism (7%) • CNS ... Treat primary cause ... Coagulation #diagnosis #causes
Invasive Aspergillus (IA) - Diagnosis and Management
Aspergillus is ubiquitous in nature. Most invasive infections are caused
infections are caused ... Rhinosinusitis, CNS ... considered in certain cases ... treatment #fungal #infectiousdiseases
Hearing Loss - Differential Diagnosis Framework

Hearing Loss Types:
• Conductive
• Sensorineural
• Mixed
Presbycusis is the most common type
cranial nerves V and VII ... Head and neck masses ... auditory nerve (CN ... (80% to 90% of cases ... cause unknown)
Neurological Manifestations of Tuberculosis
Spinal Arachnoiditis & Polyradiculopathy:
 • Subacute onset of limb weakness, bladder/bowel dysfunction, muscle
neurological symptoms • Caused ... or abruptly • CN ... dysfunction: II/VI/VII
Leukemias Overview: ALL, CML, AML, APML, CLL

Acute leukemias > 20% blasts in the peripheral blood smear
involvement • 30%: CNS ... -> AML: Blast crises ... leukostasis syndrome: CNS ... response to mosquito bites
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
Lymphadenopathy, CNS ... Legionella: • Nausea ... factor • May cause ... reported in 100% of cases ... differential #diagnosis #infectiousdiseases