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Nine out of ten people with psoriasis notice improvement in their skin lesions in summer, so dermatologists at the Argerich hospital today recommended those patients to have the sun “as an ally” and expose themselves “regularly but avoiding burns”.
“ The ultraviolet (UV) light of the sun is beneficial for psoriatic skin lesions, since UV radiation acts on the cells of the epidermis and produces an immunomodulating effect that decreases inflammation and keratinocyte proliferation (thickness and peeling) of psoriasis plaques,” explained dermatologist Alejandra Abeldaño.
Abeldaño, specialist in Oncological Dermatology and head of the Dermatology Unit of the General Hospital of Acute Cosme Argerich, explained that in the field of medicine UV radiation arises from lamps or special rays, which are used to treat psoriasis and other skin conditions such as vitiligo, atopic dermatitis, lymphomas or scleroderma.
Psoriasis is a chronic, inflammatory disease, manifested by the combination of genetic, immunological and environmental factors.
Injuries, which appear in the form of crusts and are present all year round, usually affect the scalp, torso, knees, elbows, palms and soles.
It is estimated that between 2 and 3% of the Argentine population suffer from psoriasis, which does not distinguish gender or age.
“ While some patients, on special advice from the dermatologist, may expose the lesions without protector for better absorption of UV rays, inadequate sun exposure can produce the opposite effect and worsen them,” the specialist warned.
That is why it is “essential” to use protection with a factor 30 or more, renew it every two hours or when it comes out of the water, not stay in the sun for more than an hour and moisturize the skin with creams or emulsions.
“ Even with healthy skin, the dangerous time slot, which is between 11 and 16”, said Abeldaño.
For her part Nora Poggio, dermatologist specializing in psoriasis and head of the Photomedicine Section of the Dermatology Unit of Argerich, pointed out that patients who will notice “more and better benefits” due to their exposure to the sun are those who present the “moderate or severe” forms of the disease.
“ Ultraviolet light from the sun (heliotherapy) or phototherapy works in a complementary way and is compatible with other treatments focused on inflammatory processes and the production of T cells (lymphocytes),” said the professional, who suggested “do not discontinue therapies”.
“ Maintaining adherence to treatment is crucial to controlling the disease, regardless of the time of year,” he warned.
The Dermatology Unit of the Argerich Hospital, located in the neighborhood of La Boca, was designated in 1973 as a municipal center for patient care with psoriasis, and recently acquired a new equipment of ultraviolet B radiation of narrow band, which allows “safely expand the indications for use in children and women pregnant or breast-feeding”, highlighted from that health center.
Publication Date: 12/02/2019
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