Hair loss has many causes:
- Hereditary hair loss (“androgenic alopecia”)
- Age
- Alopecia areata -an autoimmune disorder that often results in unpredictable hair loss (patches of hair loss like bald spots)
- Cancer treatment
- Childbirth, illness, or other stressors
- Hair care
- Hairstyle pulls on your scalp
- Hormonal imbalance
- Scalp infection
- Medication
- Scalp psoriasis
- Pulling your hair
- Scarring alopecia
- Sexually transmitted infection
- Thyroid disease
- Too little biotin, iron, protein, or zinc
- Friction
- Poison
What’s causing your hair loss can determine whether your hair:
- Falls out gradually or abruptly
- Thins
- Can regrow on its own
- Requires treatment to regrow
- Needs immediate care to prevent permanent hair loss