Scalp Lesions: Causes, Symptoms, and Need for Dermatologist Evaluation

Scalp lesions have diverse causes:

1. Tinea capitis (ringworm): Fungal infection → scaly, itchy patches, hair breakage.
2. Psoriasis: Red, scaly, itchy patches; may be body-wide.
3. Seborrheic dermatitis: Itchy, red, scaly patches + dandruff.
4. Folliculitis: Inflamed hair follicles (bacterial/fungal/medical).
5. Lichen planus: Itchy, red, scaly patches; possible hair loss.
6. Alopecia areata: Autoimmune, smooth round bald spots.
7. Scarring alopecia: Permanent loss from follicle destruction (infection, burns, trauma).
8. Contact dermatitis: Allergic reaction to hair products/dyes → itchy, red, scaly lesions.
9. Skin cancer: Basal/squamous cell carcinoma on scalp.
10. Telogen effluvium: Temporary diffuse shedding from stress/hormones/meds.

See a dermatologist for accurate diagnosis and targeted treatment.