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Dandruff is caused by yeasts that in physiological conditions live on human skin and do not cause any problems. However, sometimes certain factors can lead to their uncontrolled multiplication, infection and disease development. Pityriasis versicolor manifests itself in the form of darker or lighter patches on the skin. If changes occur, consult a dermatologist.
Pityriasis versicolor – symptoms and causes
Pityriasis versicolor is not contagious, but it can cause problems – not only of an aesthetic nature. The first symptom of infection is usually small spots that are slightly darker or lighter than the skin. In some cases, the lesions take on a white, pink, red or brown shade, and even resemble a tan. The skin in the place where they arise is often itchy, dry and flaky. Typically, the spots become noticeable during the warm seasons and fade or become less noticeable in the colder months.
So far, it has not been possible to clearly determine what factors stimulate the intensive growth of yeast on human skin. Often the problem concerns teenagers who struggle with oily scalp. Infection is much less common in children and seniors. It is also believed that a hot, humid environment and a weakened immune system favor the growth of fungi.
Visit to a dermatologist
As a rule, a dermatologist diagnoses tinea versicolor on the basis of a physical examination alone. In some cases, it turns out to be necessary to microscopic examination of a fragment of the skin with a Wood’s lamp – the light emitted by it stains the skin of the infected person yellow-green.
The method of treating the disease is decided by the doctor who takes into account the area of the skin affected by tinea versicolor, the size and thickness of the lesions. Antifungal drugs and facial cleansers are most often used as part of pharmacotherapy.
Pityriasis versicolor – methods of treatment
Most patients with tinea versicolor are effective with topical medications such as shampoos, soaps, creams, and lotions that control yeast growth. Their composition includes, for example, selenium sulphide, ketoconazole and zinc pyrithione.
Medical skin cleansers are usually recommended to patients who struggle with recurrent tinea versicolor. People exposed to warm, humid climates are particularly affected. Usually, it is enough to use the agent 1-2 times a month (in warm seasons) to control the growth of fungi.
If tinea versicolor covers a large part of the skin surface, the specialist may decide to include oral antifungal drugs in the treatment. Similar management is recommended for some patients with recurrent yeast infections. The therapy does not last long, but it may be associated with some side effects.