What should you know about different light therapy for skin?

Narrowband UVB phototherapy delivers a controlled band of ultraviolet light and is commonly used for inflammatory conditions such as psoriasis, atopic dermatitis, and some forms of eczema. Treatment is planned around skin type, the condition being treated, and the response of the skin. A cabin or other medical device exposes the affected areas while sensitive regions may be protected.

PUVA combines a light-sensitive medicine with UVA exposure. It is a different treatment pathway and requires specific precautions because the medicine changes light sensitivity. Neither option is a general-purpose home tanning method. The aim is to reduce inflammation, scaling, or itch while limiting unnecessary exposure.

Tell the clinician about medicines, supplements, previous light reactions, eye conditions, and any history of skin cancer. Attend the scheduled sessions consistently, use the protective equipment provided, and follow instructions about creams and sun exposure. Do not add sunbathing or tanning sessions to a medical course. An NB-UVB phototherapy cabin may treat large areas efficiently, while a clinician may choose another approach for small or sensitive areas.

Contact the treatment team if redness becomes intense, blistering develops, pain persists, or the treated skin reacts more strongly after a session. Report new eye discomfort or vision changes promptly, especially during a PUVA course. Seek advice when itch or scaling worsens despite treatment, because the dose, diagnosis, medicines, or skin-care routine may need review.

Ask which wavelength is being used, why it suits your diagnosis, how your dose will be adjusted, and what skin and eye protection is required. Clarify which medicines increase light sensitivity, when improvement should be reviewed, and what to do if a session causes a reaction.