Phototherapy is a type of treatment option that is used in dermatology to treat a variety of conditions that are responsive to a special kind of light, such as psoriasis, vitiligo, eczema, lichen planus, and others. The skin is exposed to the ultraviolet light of varying intensities, wavelengths, and durations to produce an optimal treatment effect.


The mechanism of action is related to the fact that ultraviolet (UV) light helps to block the dysregulated immune mechanisms that are present in the skin of people with skin disease. The response of the skin is unique in each individual and can range from temporary improvement to permanent remission of symptoms.


There are different types of phototherapy that can be used to treat the skin conditions that are mentioned. The three main types of phototherapy can be split in the broad categories:


Ultraviolet treatment is usually given at a clinic or hospital as part of an outpatients’ treatment or in the Office. The device can either be a fluorescent cabinet containing lightbulbs that one stands in. Alternatively, there are compact devices which only target a small area of the skin. The treatment duration and schedule is determined by your dermatologist, depending on your skin type. Initially, when starting narrow band UVB treatment, patient will only be exposed to the light for less than a minute in order to give the skin time to get used to the treatment. Treatments can be given 2 to 3 times a week and a total course typically lasts between 15 to 30 treatments and depends on clinical response.

The amount of skin exposed to the light is primarily dependent on the extent of the disease and the involvement of the skin. Most patients will have their whole body exposed to the light, with the exception of the eyes which are covered with special googles and private areas[AB4] . Historically, it is recommended not to undergo more than 250 treatments in a lifetime in order to reduce the risk of skin cancer which is mostly associated with the PUVA therapy.

If you are interested in learning more about narrow band UVB phototherapy, contact us and we will discuss, if it is appropriate treatment option for your skin condition during the appointment. Please, be advised that we accept new patients only by referral.