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Hair Loss (Alopecia) - General (Diffuse and Focal) Differential Diagnosis Algorithm

DIFFUSE
Scarring - Irreversible-biopsy required
 • Lupus
Hair Loss (Alopecia ... • Androgenetic alopecia ... facial hair) • Alopecia ... decalvans - Secondary ... areata • Secondary
Hyperuricemia - Differential Diagnosis Algorithm
Primary - Over-production
     • Increased turnover of nucleotides
Primary
• Starvation Secondary ... High purine diet Secondary ... Diagnosis #Algorithm #endocrinology
Focal / Localized Hair Loss (Alopecia) - Differential Diagnosis Algorithm

Scarring - Irreversible-biopsy required
 - Infectious
Localized Hair Loss (Alopecia ... decalvans - Secondary ... Brocq • Alopecia ... Absent • Alopecia ... areata • Secondary
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 ... Obstruction #Primary #Secondary
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
Causes of Primary and Secondary (without Red Flags) Headaches - Differential Diagnosis Algorithm

#Primary #Secondary #Headaches #Neurology
of Primary and Secondary ... Algorithm #Primary #Secondary
Abnormal Lipid Profiles - Differential Diagnosis Algorithm

Increased Cholesterol and Triglycerides 
 - Genetic Causes
Dysbetalipoproteinemia - Secondary ... Hypo-alphalippproteinemia - Secondary ... LDLr deficiency Secondary ... Deficiency - Secondary
Primary Dermatologic Nail Disorders - Differential Diagnosis Algorithm
Nail Plate - Pitting
 • Psoriasis
 • Alopecia Areata
Nail
Psoriasis • Alopecia
Primary and Secondary Causes of Hypertension - Differential Diagnosis Algorithm
Primary (Essential) (95%) - Onset between age
Primary and Secondary ... No features of secondary ... Hypertension Secondary ... Hypertension #Primary #Secondary