56 results
Causes of Erythema Nodosum - Mnemonic

NO cause found in 60% of cases
Drugs (antibiotics e.g., sulfonamides, amoxicillin)
Oral
Mnemonic NO cause ... Sarcoidosis or Lofgren's syndrome ... Viral: HSV, EBV, HIV ... Nodosum #Mnemonic #Causes ... Differential #Diagnosis #Dermatology
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
/HCV testing - ... K), H. pylori test ... thyroid function test ... not required in all ... #Workup #hematology
The head impulse test (HIT) result is positive (abnormal) in nearly all patients with a peripheral
The head impulse test ... abnormal) in nearly all ... with a peripheral cause ... with a central cause ... #HeadImpulse #Testing
Disseminated Gonococcal Infection - Diagnosis and Management Summary

Bacteremic spread of the Gram-negative diplococci Neisseria gonorrhoeae. History
susceptibility testing ... the preferred test ... the workup • Test ... HIV, Chlamydia ... Distal joints, knees
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
Causes of Knee Effusions ... Brucellosis - Viruses: HIV ... Seronegative Reactive Syndrome ... Effusions: - Hematologic ... #Effusions #causes
Causes of Thrombocytopenia - Differential Diagnosis Algorithm
 
Decreased Megakaryopoiesis
 • Aplastic Anemia
 • Toxic Damage (e.g.
Causes of Thrombocytopenia ... Quinidine • HIT ... Non-lmmune: • HELLP Syndrome ... Diagnosis #Algorithm #Causes ... #Hematology
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Kasabach-Merritt syndrome ... Gardner-Diamond syndrome ... Ig A vasculitis/HSP ... Differential #Diagnosis #hematology ... #nonpalpable #dermatology
Dyspnea - Differential Diagnosis Framework

Cardiovascular Causes of Dyspnea:
 • Myocardium:
	- Heart failure
	- CAD/ACS
	- Valvulopathy
 • Electrical:
	-
Cardiovascular Causes ... failure - CAD/ACS ... Hepatopulmonary syndrome ... Other Causes ... Transverse myelitis • Hematology
Algorithm regarding the diagnosis and treatment of Hereditary Hemochromatosis HH. 

Step 1: In the patient with
initial screening test ... elevated, HFE gene testing ... Step 3: All patients ... including liver and hematologic ... If other causes
Thrombocytopenia and Pregnancy - TTP/HUS, HELLP Syndrome and Acute Fatty Liver of Pregnancy (AFLP)
Three syndromes in
TTP/HUS, HELLP Syndrome ... Pregnancy (AFLP) Three syndromes ... Elevated Liver tests ... child * Severe cases ... AFLP #obstetrics #hematology