Avoid applying creams, perfumes, or lotions before a session to maximize light penetration and prevent sensitivity.
UVB Phototherapy
Narrowband UVB (NB-UVB) phototherapy is a highly effective, drug-free, and safe treatment for chronic skin conditions, including psoriasis, vitiligo, and eczema. It uses a specific, narrow spectrum of ultraviolet light (310-315 nm) to reduce inflammation, slow skin cell growth, and stimulate repigmentation, usually administered 2-3 times a week.
Key Details of NB-UVB Phototherapy:
- Conditions Treated: Primarily used for psoriasis, vitiligo, atopic dermatitis (eczema), and itching (pruritus).
- How it Works: The 311-312 nm wavelength penetrates the skin, suppressing overactive immune cells and encouraging pigment-producing melanocytes.
- Treatment Schedule: Sessions are typically held 2-3 times weekly, often taking 12-16 weeks for optimal results.
- Administration: Treatments are offered in dermatologist offices (full-body booths or handheld units) or via approved home-based units.
- Side Effects: Common short-term effects include sunburn-like redness, dry skin, and itching. Long-term use may slightly increase skin cancer risk, similar to natural sunlight exposure.
- Safety: Suitable for children, pregnant women, and the elderly.
Procedure & Precautions
Preparation:
Safety Measures:
Protective eyewear must be worn to prevent cataracts.
Effectiveness:
Generally considered superior to broadband UVB and a safer alternative to systemic medications.