Types of Phototherapy

Phototherapy comes with several main types. Sometimes, doctors suggest patients combine phototherapy treatment with a prescribed cream to get the best results.

  • NB-UVB Light Therapy

NB-UVB (Narrowband Ultraviolet B) is one of the most popular types of phototherapy. This treatment is considered effective to treat guttate psoriasis or plaques. UVB lamp used in phototherapy usually comes with a light wavelength that ranges between 311 nanometers to 313 nanometers. 

  • BB-UVB Light Therapy

BB-UVB (Broadband Ultraviolet B) is the older version of phototherapy if compared to NB-UVB. However, both of the treatments are just the same. The only thing that differentiates between the two is the wavelength used. Unlike NB-UVB, BB-UVB has a wavelength that ranges between 270 nm to 390 nm. However, BB-UVB is considered less effective if compared to NB-UVB. 

  • PUVA Therapy

PUVA (Psoralen Plus Ultraviolet A) therapy uses ultraviolet A in the process. This type of phototherapy is believed to increase skin sensitivity to light. Psoralen can be used in some ways. It can be taken orally, applied topically, or mixed in bathwater. This type of therapy will work best if combined with an oral retinoid.

  • Targeted UVB Light Therapy

Compared to other types of phototherapy, this targeted UVB light therapy is relatively the latest invention in the medical world. The treatment itself involves the use of an excimer laser in the process. Since the therapy is specifically targeted, the excimer laser will only expose small areas of the body affected by skin diseases

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