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Ultraviolet light therapy or ultraviolet phototherapy is a treatment for psoriasis, atopic skin disorder, vitiligo and other skin diseases. There are two main treatments: UVB that is the most common, and PUVA.
UV-B treatments for skin conditions such as psoriasis, vitiligo, and atopic dermatitis are administered in very low doses, often lasting only a few minutes or less than a minute when using lamps emitting 290-300 nanometer light. This low dosage does not significantly increase the risk of skin cancer, making UV-B phototherapy a safe treatment ...
This reduces the treatment time, makes the treatment more effective, and enables the use of a weaker psoralen. The physician and physiotherapists can choose a starting dose of UV based on the patient's skin type. The UV dose will be increased in every treatment until the skin starts to respond, normally when it becomes a little bit pink.
Phototherapy is an effective treatment because it forces skin cells to manufacture melanin to protect the body from UV damage. Prescribed treatment is generally 3 times a week in a clinic or daily at home. About 1 month usually results in re-pigmentation in the face and neck, and 2–4 months in the hands and legs.
Different wavelengths and mechanisms are utilized for different therapeutic effects. The therapeutic advantages of LED therapy stem from its effectiveness in various treatments, including wound healing, acne treatment, sunburn protection, and the use of phototherapy for facial wrinkles and skin revitalization. [2]
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Phototherapy is considered a second-line treatment for vitiligo. [2] Exposing the skin to light from UVB lamps is the most common treatment for vitiligo. The treatments can be done at home with a UVB lamp or in a clinic. The exposure time is managed so that the skin does not suffer overexposure.
PDT is a minimally invasive treatment that is used to treat many conditions including acne, psoriasis, age related macular degeneration, and several cancers such as skin, lung, [28] brain, mesothelioma, [29] [30] bladder, bile-duct, [31] esophageal, and head and neck cancers.