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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 ... Algorithm #Causes #OBGyn
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
Hypertension in Pregnancy - Differential Diagnosis Algorithm

Pre-existing Hypertension - Before Pregnancy OR <20 weeks gestational age
Primary • Secondary ... causes #obstetrics #obgyn
Hyperuricemia - Differential Diagnosis Algorithm
Primary - Over-production
     • Increased turnover of nucleotides
Primary
• Starvation Secondary ... High purine diet Secondary ... Diagnosis #Algorithm #endocrinology
Causes of Secondary / Provoked Seizures - Differential Diagnosis Algorithm
Febrile
Infection
 • Sepsis
 • Encephalitis
 • Meningitis
Metabolic
Causes of Secondary ... Pseudoseizures #Secondary ... Provoked #Seizures #Neurology
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
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 ... Algorithm #Causes #OBGyn
Causes of Secondary Amenorrhea - Differential Diagnosis Algorithm
Absence of menses for more than 3 cycles or
Causes of Secondary ... Cervical stenosis #Secondary ... Algorithm #Causes #OBGyn
Hypercalcemia - Differential Diagnosis Algorithm
Primary Hyperparathyroidism
 • Adenoma
 • Hyperplasia
 • MEN 1 and 2A
Tertiary Hyperparathyroidism
long-standing secondary ... Diagnosis #Algorithm #Endocrinology
Hypocalcemia - Differential Diagnosis Algorithm - Low and High Phosphate
LOW PHOSPHATE
 - Low/NormaI PTH
High PTH • Secondary ... Algorithm #Phosphate #endocrinology