When ultraviolet light therapy is used for pediatric psoriasis, which modality is preferred for safety and efficacy?

When ultraviolet light therapy is used for pediatric psoriasis, which modality is preferred for safety and efficacy?

• A. Broad-spectrum UVA
• B. Broadband UVB
• C. Narrowband UVB
• D. PUVA with psoralen

Answer: (C)

Narrowband UVB is preferred for safety and efficacy in pediatric psoriasis. This modality uses a narrow range of wavelengths around 311–313 nm, which effectively reduces psoriatic skin by targeting the autoimmune-driven epidermal hyperproliferation while requiring lower energy per dose. That means good control of lesions with less cumulative DNA damage and a smaller long-term cancer risk compared with broader UV spectra. It also avoids psoralen administration, so there’s no need for the photosensitizing drug or the associated systemic and ocular precautions. In contrast, broad-spectrum UVA and broadband UVB expose skin to a wider range of wavelengths with higher risks of burns, photoaging, and carcinogenesis, and PUVA combines psoralen with UVA and carries even greater long-term cancer risk—factors that are especially important to minimize in children. For these reasons, narrowband UVB offers a favorable balance of effectiveness and safety in kids.

Narrowband UVB is preferred for safety and efficacy in pediatric psoriasis. This modality uses a narrow range of wavelengths around 311–313 nm, which effectively reduces psoriatic skin by targeting the autoimmune-driven epidermal hyperproliferation while requiring lower energy per dose. That means good control of lesions with less cumulative DNA damage and a smaller long-term cancer risk compared with broader UV spectra. It also avoids psoralen administration, so there’s no need for the photosensitizing drug or the associated systemic and ocular precautions. In contrast, broad-spectrum UVA and broadband UVB expose skin to a wider range of wavelengths with higher risks of burns, photoaging, and carcinogenesis, and PUVA combines psoralen with UVA and carries even greater long-term cancer risk—factors that are especially important to minimize in children. For these reasons, narrowband UVB offers a favorable balance of effectiveness and safety in kids.