Does narrowband UVB phototherapy treat mycosis fungoides?

Mycosis fungoides is a form of cutaneous T-cell lymphoma that may appear as persistent patches or plaques on the skin. Narrowband UVB can reduce abnormal activity in superficial skin and may be considered when disease is limited to suitable skin areas. It is not a general treatment for every stage, and it does not replace assessment of lymph nodes, blood, or other organs when those areas are relevant. The care team may photograph or examine the skin regularly to judge response and detect new or changing lesions.

Confirm that a dermatologist or lymphoma specialist has established the diagnosis before beginning light treatment. Attend sessions as scheduled and tell the team about new lumps, persistent ulcers, changing lesions, fever, night sweats, or unexplained weight loss. Protect eyes and any areas the clinician tells you to shield. Do not apply unapproved creams immediately before a session, because some products can alter light sensitivity. Keep follow-up visits even when visible patches improve.

Contact your specialist promptly if a lesion becomes thicker, painful, ulcerated, or rapidly changes, or if new swollen nodes appear. Seek urgent medical attention for severe infection signs, heavy bleeding from a lesion, breathing difficulty, or sudden severe illness. After phototherapy, report marked burning, blistering, or eye discomfort to the treatment team without waiting for the next session.

Is my disease limited to skin that narrowband UVB can reach? How will you monitor lesions outside the treated field? What symptoms should trigger an earlier review? How will this fit with my wider lymphoma follow-up?