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Phototherapy (Nbuvb) :

Narrowband UVB is the most common form of phototherapy used to treat skin diseases. "Narrowband" refers to a specific wavelength of ultraviolet (UV) radiation, 311 to 312 nm.

The narrowband range of UV radiation has proved to be the most beneficial component of natural sunlight for psoriasis.

Narrowband UVB may also be used in the treatment of many other skin conditions including atopic eczema, vitiligo, pruritus, lichen planus, polymorphous light eruption, early cutaneous T-cell lymphoma and dermographism.

Compared with broadband UVB:

  • Exposure times are shorter but of higher intensity.

  • The course of treatment is shorter

  • It is more likely to clear the skin condition.

  • Longer periods of remission occur before it reappears

Patients attend for phototherapy two to four times weekly. If whole-body treatment is recommended, the patient is placed in a specially designed cabinet containing fluorescent light tubes.

The amount of UV is carefully monitored by the phototherapy staff. A number of protocols exist depending on the individual's skin type, age, skin condition and other factors.

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