33 results
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
- Differential ... • CT: Halo sign ... Constitutional symptoms ... #AIDS #pulmonary ... diagnosis #infectiousdiseases
Fever in Returning Travelers from Tropical Regions - Frequent Differential Diagnoses
Medical History:
 • Skin exposure to
Regions - Frequent Differential ... infection Cardinal Symptoms ... localizing signs ... or symptoms - Malaria ... Cough, dyspnea - Pneumonia
Venn Diagram - Does this patient have pneumonia?
Diagnosis is generally based on three lines of evidence:
this patient have pneumonia ... Inflammation (e.g., fever ... symptoms (e.g., ... chest pain) and signs ... #Pneumonia #Venn
Sarcoidosis 
Non-caseating granulomas (Composed of T-helper & inflammatory cells) 
Clinical:
 • Disease fatal in 10% of
Constitutional: Fever ... polyarthritis • Pulmonary ... exertion • Neurologic ... Sarcoidosis #Diagnosis #Symptoms ... #Signs #Pulmonary
Approach to Headaches - Differential Diagnosis Algorithm

Red flags (PHANTOMS):
 • Pattern change, progressively worse, papilledema
 •
to Headaches - Differential ... history of cancer, HIV ... ) • Systemic symptoms ... , fever, myalgia ... Diagnosis #Algorithm #neurology
Cytomegalovirus (CMV) in HIV-AIDS Patients
Cytomegalovirus (CMV): double-stranded DNA virus, herpesvirus family.
CMV infection: virus isolation or detection
or signs. ... 50 or less: • Neurologic ... Pancreatitis • Pulmonary ... AIDS #diagnosis #differential ... #signs #symptoms
Neurological Manifestations of Tuberculosis
Spinal Arachnoiditis & Polyradiculopathy:
 • Subacute onset of limb weakness, bladder/bowel dysfunction, muscle
(IRIS): • In HIV ... symptoms, fever ... ) • Headache, fever ... Meningitis: • Fever ... Tuberculosis #diagnosis #differential
CNS Infections - Viral Encephalitis and Bacterial Meningitis - Differential Diagnosis Framework

Viral Encephalitis:
MCC: Enteroviruses (e.g., coxsackievirus
Herpesviruses (MCC: HSV ... Coltivirus Symptoms ... • Headache • Fever ... Acute meningeal signs ... (fever, nuchal
Community Acquired Pneumonia - Presenting Features
 • History in favor of CAP: Dyspnea, Cough, particularly if
if productive, Fever ... Tachycardia, Hypoxemia, Fever ... responsive to IV ... #diagnosis #signs ... #symptoms
AIDS-defining illnesses
 - Candidiasis of the esophagus, bronchi, trachea, or lungs [(but NOT the mouth (thrush)]
disease (other than liver ... tuberculosis, any site (pulmonary ... - Pneumonia, ... #InfectiousDiseases ... Diagnosis #List #Differential