67 results
Causes of Erythema Nodosum - Mnemonic

NO cause found in 60% of cases
Drugs (antibiotics e.g., sulfonamides, amoxicillin)
Oral
Causes of Erythema ... Mnemonic NO cause ... Sarcoidosis or Lofgren's syndrome ... Nodosum #Mnemonic #Causes ... Differential #Diagnosis #Dermatology
Mucous Membrane Disorder - Differential Diagnosis Algorithm
Erosions/Ulcers/Blisters
 - Primary Dermatologic Diseases
     •
Blisters - Primary Dermatologic ... Stevens-Johnson Syndrome ... • Behcet's syndrome ... MucousMembranes #dermatology ... Diagnosis #Algorithm #causes
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 ... Seronegative Reactive Syndrome ... granuloma - Synovial ... Hemophilia - Synovium ... Knee #Effusions #causes
Genital Skin Ulcers - Differential Diagnosis Algorithm
Painful:
 • Herpes simplex
 • Haemophilus ducreyi (chancroid)
 • Behcet's
) • Behcet's syndrome ... ulcerative #skinrash #dermatology ... Diagnosis #Algorithm #causes
Dyspnea - Differential Diagnosis Framework

Cardiovascular Causes of Dyspnea:
 • Myocardium:
	- Heart failure
	- CAD/ACS
	- Valvulopathy
 • Electrical:
	-
Cardiovascular Causes ... Tamponade Pulmonary Causes ... Hepatopulmonary syndrome ... Other Causes ... Transverse myelitis • Hematology
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
• Secondary Causes ... Kasabach-Merritt syndrome ... Gardner-Diamond syndrome ... Differential #Diagnosis #hematology ... #nonpalpable #dermatology
Causes of Thrombocytopenia - Differential Diagnosis Algorithm
 
Decreased Megakaryopoiesis
 • Aplastic Anemia
 • Toxic Damage (e.g.
Causes of Thrombocytopenia ... Non-lmmune: • HELLP Syndrome ... Diagnosis #Algorithm #Causes ... #Hematology
Causes of Vaginal Discharge - Differential Diagnosis Algorithm
Neoplastic:
 • Endometrium
 • Cervix
 • Vulva
 • Vagina
Systemic
Causes of Vaginal ... vascular disease • Dermatologic ... vaginalis Toxic Shock Syndrome ... Diagnosis #Algorithm #Causes
Causes of Thrombocytosis - Differential Diagnosis
Secondary Thrombocytosis (a.k.a Reactive Thrombocytosis):
 • Acute infection
 • Solid organ
Causes of Thrombocytosis ... Myelodysplastic syndrome ... Differential #Diagnosis #Causes ... #hematology #secondary
Stevens Johnson Syndrome and Toxic Epidermal Necrolysis - Causative Medications 
and Level of Suspicion 

High Risk:
Antigout:
Stevens Johnson Syndrome ... #DrugInduced #Causes ... Epidermal #Necrolysis #Dermatology