9 results
Hemophagocytic Lymphohistiocytosis (HLH)
Pathophysiology: Triggering factor (infection,...)→Activation of CD8 T cells (IFN-y) → Excessive activation of macrophages
Activation of CD8 ... IFN-y) → Excessive activation ... accumulation of clinical ... Assessment • Clinical ... : fever +++, hepatosplenomegaly
CNS Infection in HIV / AIDS - Differential Diagnosis Framework

Principles of HIV-Associated CNS Opportunistic Infections:
 •
infections result from reactivation ... should be based on clinical ... • Symptoms: Fever ... • Symptoms: Fever ... - Generally >3 cm
Macrophage Activation Syndrome (MAS)
Classified among the secondary or acquired forms of haemophagocytic lymphohistiocytosis (sHLH)

What?
A subset of
Macrophage Activation ... syndromes Clinical ... is the main clinical ... nervous system (CNS ... 5000 to 10,000 ng/mL
HIV-Associated Neurocognitive Disorder (HAND)

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

Pathophysiology:
HIV frequently
impairment • Mild ... and infects the CNS ... -> microglial activation ... Clinical Presentation ... : The clinical
CNS Infections - Viral Encephalitis and Bacterial Meningitis - Differential Diagnosis Framework

Viral Encephalitis:
MCC: Enteroviruses (e.g., coxsackievirus
CNS Infections - ... Powassan, louping ill ... • Headache • Fever ... • Common clinical ... meningeal signs (fever
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
) Suspect: Clinical ... weight loss, and fever ... and CNS • Headache ... , mild cognitive ... Chronic B-cell activation
Transverse Myelitis Overview

Focal inflammatory disorder of the spinal cord resulting in rapid onset of weakness, sensory
• Excessive activation ... that results in CNS ... Transverse Myelitis - Clinical ... - Pleocytosis: Mild ... , HIV, Hep A/B/CMV
SEPSIS AND SEPTIC SHOCK

DEFINITION AND PATHOPHYSIOLOGY
 • Sepsis: Life-threatening organ dysfunction due to a dysregulated host
cytokines, complement activation ... CLINICAL RECOGNITION ... in any acutely ill ... • Symptoms: Fever ... CLINICAL FEATURES
Cryptococcal meningitis on T2 MRI
30 M from sub-Saharan Africa presents w/ progressive Headache x1 mo, +neck
low glucose) CNS ... are common but fever ... half. absence of fever ... is typically 20 ml ... T2 #MRI #Brain #clinical