11 results
HIV-Associated Neurocognitive Disorder (HAND)

Definition:
HIV-Associated Neurocognitive disorders categories:
• Asymptomatic neurocognitive impairment
• Mild neurocognitive impairment
• HIV dementia

Pathophysiology:
HIV frequently
early stages of infection ... Diagnosis: MRI ... : • Increased CSF ... : The clinical ... disorder #dementia #AIDS
CNS Infection in HIV / AIDS - Differential Diagnosis Framework

Principles of HIV-Associated CNS Opportunistic Infections:
 •
HIV / AIDS - Differential ... should be based on clinical ... Imaging: - MRI ... and <25% culture positive ... #differential #
Transverse Myelitis Overview

Focal inflammatory disorder of the spinal cord resulting in rapid onset of weakness, sensory
Transverse Myelitis - Clinical ... • Bilateral signs ... brain and/or optic ... simplex virus, HIV ... management #neurology #differential
Guillain-Barre Syndrome - Summary

Acute AIDP that presents with rapidly progressive flaccid weakness

Epidemiology:
 • 1-2 cases/100,000 per
Summary Acute AIDP ... response preceding infection ... Campylobacter jejuni - HIV ... • Weakness: Starts ... axonal form • MRI
CNS Infections - Viral Encephalitis and Bacterial Meningitis - Differential Diagnosis Framework

Viral Encephalitis:
MCC: Enteroviruses (e.g., coxsackievirus
CNS Infections - ... Herpesviruses (MCC: HSV ... • Common clinical ... Acute meningeal signs ... • Gram stain: Positive
Posterior Reversible Encephalopathy Syndrome (PRES) Overview

Clinico-Radiological Syndrome, characterized by:
 • Headache
 • Seizures
 • Altered mental
parietal lobes of the brain ... Preeclampsia, Eclampsia, Infection ... Reversible course Differential ... Diagnosis: • Infection ... parietal lobes of the brain
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
Lung Infections ... in HIV - Differential ... • CT: Halo sign ... #HIV #AIDS #pulmonary ... #differential #
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Vasculitis - Differential ... Vasculitis Differential ... purpura: Strong sign ... Cerebrospinal fluid (CSF ... oligoclonal bands • MRI
Cryptococcal meningitis on T2 MRI
30 M from sub-Saharan Africa presents w/ progressive Headache x1 mo, +neck
Cryptococcal meningitis, hiv ... organism (soap bubble sign ... on mri) HIV-infected ... #Brain #clinical ... #radiology
Mycoses

HISTOPLASMOSIS
• Inhalation of conidia → Yeast → travel to lymph nodes → spread in body
• Bird
yeast • At risk: AIDS ... Inhalation of spores ... • Sinusitis • Brain ... osteoarticular, pulmonary, ocular ... have positive blood