Phototherapy
- Indications
- Psoriasis
- Atopic dermatitis
- Alopecia areata
- Granuloma annulare
- Cutaneous T-cell lymphoma
- Vitilligo
- Photodermatoses
- BCC
- Actinic keratosis
- Mechanisms
- Thickens epidermis
- Hyperpigmentation
- Immunosuppressive effect
- Anti-tumor effect
- Procedure
- Minimal erythematous dose (MED) is determined
- The dose of UV light depends on the MED
- Types
- Narrow-band UVB
- Broad-band UVB
- Selective UVB
- Psoralen + UVA
- Photodynamic therapy
- Uses visible light, not UV
- For cancers that are caused by UV (BCC)