Herpes labialis
It is the most known skin disorders triggered by the sun. Outbreaks are caused by UVB exposure-rich, as in the sea or high altitude. They occur in approximately one third of patients. Poorly understood, the mechanism could go through a phototraumatisme and immunosuppressive effect of ultraviolet light.
Acne
This condition worsens with time delay. During the first days of exposure, the lesions subside because of an anti-inflammatory effects of UV. But the sun causes a thickening of the skin clogging the pores. Thus, the decision shows the pores become clogged again the target of inflammatory reactions. This is why acne breakouts usually occur two to three weeks after the end of the holidays.These patients should protect themselves with sunscreen and resume their proper acne treatment immediately after exposure.
Rosacea, rosacea
The sun, like other vasodilators aggravating factors such as alcohol, spices, heat, etc.. Accentuates rosacea, which is the first stage of rosacea. Subsequently, UV did not impact but can cause painful or burning sensations.
Melasma or pregnancy mask
Most often triggered in women who are pregnant or taking oral contraceptives, it is a brownish pigmentation on the face, touching his forehead, cheekbones and upper lip, which is accentuated in the sun. If the damage is confined to the epidermis, it is possible to get rid of melasma. However, if it touches the dermis, there is no cure.
Psoriasis and atopic dermatitis
Both conditions are generally improved by the sun. But 10% of psoriatic worsening during the summer months. It is with atopic pruritus.
Lupus erythematosus
UV can also aggravate or trigger autoimmune diseases like lupus erythematosus.
It does not seem necessary to completely hide the sun, but to take adequate precautions. And like everyone else, to protect themselves with sunscreen adapted to avoid prolonged exposure and the hottest hours of the day.
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