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Causes of Primary and Secondary Amenorrhea - Differential Diagnosis Algorithm
Primary Amenorrhea - No onset of menarche
of Primary and Secondary ... by age 16 with secondary ... age 14 without secondary ... Central - Pituitary Secondary ... Causes #OBGyn #Gynecology
Causes of Primary and Secondary (without Red Flags) Headaches - Differential Diagnosis Algorithm

#Primary #Secondary #Headaches #Neurology
of Primary and Secondary ... Algorithm #Primary #Secondary ... #Headaches #Neurology
Hair Loss (Alopecia) - General (Diffuse and Focal) Differential Diagnosis Algorithm

DIFFUSE
Scarring - Irreversible-biopsy required
 • Lupus
decalvans - Secondary ... areata • Secondary ... Diffuse #Focal #HairLoss
Causes of Secondary / Provoked Seizures - Differential Diagnosis Algorithm
Febrile
Infection
 • Sepsis
 • Encephalitis
 • Meningitis
Metabolic
Causes of Secondary ... Pseudoseizures #Secondary ... Provoked #Seizures #Neurology
Causes of Secondary Amenorrhea - Differential Diagnosis Algorithm
Absence of menses for more than 3 cycles or
Causes of Secondary ... Cervical stenosis #Secondary ... Causes #OBGyn #Gynecology
Causes of Primary Amenorrhea - Differential Diagnosis Algorithm
No onset of menarche by age 16 with secondary
by age 16 with secondary ... age 14 without secondary ... Causes #OBGyn #Gynecology
Secondary Causes of Hypertension - Differential Diagnosis Algorithm
Hypertension - BP > 140/90 (>130/80 for DM)
Hypertensive urgency
Secondary Causes ... 3+) Consider secondary ... Hypertension #HTN #Secondary ... #Nephrology #Differential
Focal / Localized Hair Loss (Alopecia) - Differential Diagnosis Algorithm

Scarring - Irreversible-biopsy required
 - Infectious
decalvans - Secondary ... areata • Secondary ... syphilis #HairLoss
Somatoform Disorders - Differential Diagnosis Algorithm
 - Patient presents with complex medical problem or symptoms that
Motivation is secondary ... Conversion Disorder - Neurologic
Causes of Secondary Headaches (without Red Flag Symptoms) - Differential Diagnosis Algorithm
Acute
 • Sinusitis
 • Dental
Causes of Secondary ... Withdrawal #Secondary ... #Headaches #Neurology