B2. Alopecias
- Phases of hair growth
- Anagen phase – hair growth
- Catagen phase – transition phase
- Telogen phase – resting phase
- Repeat
- Types of alopecia
- Diffuse alopecia
- Androgenetic alopecia
- Most common cause
- In androgen-sensitive hair follicles
- Bitemporal scalp in men
- Frontal scalp in women
- Androgens shorten the anagen phase
- Telogen effluvium
- Endocrine disorders
- Drugs
- Malnutrition
- Severe stress
- Androgenetic alopecia
- Circumscribed alopecia
- Alopecia areata
- Autoimmune
- Bacterial infection
- Stress
- Syphilitic alopecia
- Scarring alopecia
- Trauma
- Burn
- Ulcerating skin diseases
- Alopecia areata
- Diffuse alopecia
- Treatment
- Finasteride
- Minoxidil
- Hair transplant
- PUVA
- Imiquimod
- Tacrolimus
- etc.