Healthcare professionals mainly use different methods to deliver light therapy to treat eczema or psoriasis. These also include different equipment and types of light. The types of phototherapy treatment given to patients are usually based on several factors, they are:
- Skin type of patients
- Parts of the body affected by the skin diseases
- The overall health of the patients
- How much the skin diseases affected the body
- How much skin diseases affect the life quality of the patients
The types of light therapy are divided into two, they are UVA phototherapy light and UVB phototherapy light. UVA light has a long wavelength and can penetrate to the deeper part of the skin. Most of the time, healthcare professionals will use this UVA light treatment along with psoralen to treat psoriasis. This will lead the skin to be more receptive to the UV lights. Unlike UVA light, UVB comes with a shorter wavelength. It can’t reach the deeper level of the skin, only the upper parts. Not only that but a treatment that uses a UVB phototherapy lamp doesn’t need psoralen when it is used to treat psoriasis. UVB therapy, especially for psoriasis, also comes with different types. Here they are:
- Broad-Band UVB
It is the oldest form of light therapy used by healthcare professionals for psoriasis. Broad-band UVB therapy usually uses a wide length wave.
- Narrow-Band UVB
Compared to broad-band UVB therapy, this narrow-band therapy uses a shorter length wave. This is the most common light therapy often recommended for people with psoriasis.
- Laser UVB
Laser UVB is usually recommended by healthcare professionals if psoriasis only affects less than 5% of the body.
- At-Home UVB Phototherapy
This kind of therapy is usually recommended for those with less severe psoriasis symptoms. It uses smaller-scale lightboxes and often used as a follow-up treatment.