Blue light therapy for psoriasis, or phototherapy, is widely in use in the management of psoriasis.
There are many potential sources, knowing that the most popular and most prescribed is by using ultraviolet. These correspond to wavelengths ranging from 290 to 340 nm with today’s preference for the TL01 narrow band TL01 of 311 nm.
Propositions for new sources for treating psoriasis are several, one can cite the Excimer laser which emits UVB at 308 nm, the Excimer lamp also at 308 nm which irradiates only the problem areas. You can also treat plaque psoriasis with dynamic phototherapy, that is to say locally apply a photosensitizing agent (aminolevulinic acid) followed by irradiation of visible blue or red light, to be differentiated from localized or generalized balneopuvatherapy, which consists of applying meladinine solution during a bath before irradiation with ultraviolet A.
The blue light therapy for psoriasis
According to various criteria such as the proportion of the body affected by the disease and the importance of the symptoms grouped in the PASI score (Psoriasis Area Severity Index), there are 3 types of psoriasis, light forms, moderate forms and severe forms.
- For moderate to severe forms, systemic treatments are often prescribed: phototherapy (UVB therapy, puvatherapy).
- For mild forms, local topical treatments such as dermocorticoids or vitamin D derivatives are particularly indicated.
- However, localized phototherapy may also be proposed whether it is puvatherapy, balneopuvatherapy or UVBtherapy, especially in palmoplantar attacks.
Recently, treatments with blue LED light has been successful. Here, it is not about UV but of a light from a non-toxic action, without a risk of occurrence of cutaneous cancer.
What is blue LED light?
LEDs are electroluminescent diodes that consume very little energy. Blue light has a wave of 453 nm. It is part of the visible radiation and does not contain UV whose wavelengths are between 290 and 340 nm.
How does blue light work?
It has anti-proliferative properties. It notably reduces the proliferation of keratinocytes while promoting their differentiation. In psoriasis which is a disease in which epidermal cells proliferate, blue light can prevent this hyperproliferation.
It also intervenes on immune cells by regulating T lymphocytes and reducing cytokine production. It therefore has a double action on the inflammatory process and keratinocyte proliferation.
Several studies tend to show its effectiveness in mild psoriasis. A first experiment was made in 2009 by Weinstabl A et al on 40 patients with mild to moderate psoriasis for 4 weeks, with positive results.
A second clinical study took place in 2014 in 47 patients over a longer period of 4 months. The patients were in full control, one plate was under treatment with blue light in comparison to another untreated.
The value of the local PASI based on starting index of about 5.2 improvement by an average of 50% during the 12 weeks of treatment with blue LED light exposure. No adverse effects related to blue LED light were observed.
There is a device available today
This is the Blue Control device from Philips which is freely available on Amazon.
It is a portable phototherapy device for home treatment. The treatment must be daily and must last 30 minutes per plate. I highly recommend it for the local attacks on the limbs (arms, legs, elbows, knees, back of the hands). You just need to strap the device at the level of the problem.
This is a new treatment for mild to moderate psoriasis. The psoriasis plaques should be well limited however, it should be known that the treatment is long, that it lasts several weeks or months but that it gives excellent results: 50% of improvement in 12 weeks.
The investment is quite low in the long term, which corresponds to the purchase of equipment, considering the results you will have with this blue light therapy for psoriasis, saving you on the regular purchase of some costly medications such as ointments, creams, etc., and it is safe to use at home at any time of the day and it is pleasant to use and has no side effects.
Thanks for reading
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