RISK FACTORS, SIGNS & SYMPTOMS, FEATURES OF ALTERNATIVE AETIOLOGIES

RISK FACTORS

• Family history
• White ethnicity
• Environmental factors: stress, UV exposure, smoking
• Extreme/rapid weight loss
• Medications: anabolic steroids, carbimazole, progestogens

SIGNS & SYMPTOMS

• Diffuse hair thinning
• Crown involvement
• Frontal hairline reduction

FEATURES OF ALTERNATIVE AETIOLOGIES MAY INCLUDE

• Acne/Hirsutism with PCOS
• Acute rapid shedding with telogen effluvium
• Temporal hair thinning with traction alopecia/Hypothyroidism
• Eyebrow/eyelash involvement in alopecia areata
• Systemic causes: iron deficiency, vitamin D deficiency, thyroid dysfunction