What to expect from narrowband UVB phototherapy for mycosis fungoides

Mycosis fungoides is a type of cutaneous T-cell lymphoma that can appear as persistent patches or plaques. Narrowband UVB may be considered when disease is limited to the skin and the lesions can be reached by the light. The team will document lesion colour, scale, thickness, and distribution, then compare these findings during follow-up. Phototherapy is part of a specialist plan and does not replace staging, blood tests, or other reviews when those are needed.

Give the phototherapy team an accurate list of medicines, creams, supplements, and previous skin treatments. Follow the same appointment routine and protect areas that are not meant to receive light. Do not add sun exposure or tanning sessions to the plan. Use prescribed topical treatment exactly as directed and tell the team if lesions are difficult to cover, newly appearing, bleeding, or becoming more raised. Bring questions about eye protection and clothing to the first visit.

Contact your specialist about blistering, marked pain, severe or prolonged redness, or swelling after an exposure. Arrange prompt assessment for a rapidly enlarging or thickening lesion, an open or bleeding area, new lumps, enlarged glands, fever, or unexplained worsening. These findings do not identify the cause by themselves, but they should not wait for a routine phototherapy appointment.

Ask which lesions are being targeted, how treatment response will be recorded, and what would make the team pause or change phototherapy. Clarify the role of topical medicines, follow-up examinations, and protection for eyes and uninvolved skin.