Pityrosporum orbiculare is a microorganism from the genus Pityrosporum. This is a yeast fungus that is part of the normal microflora of human skin. However, under certain conditions, P. orbiculare can grow in excess and cause a condition called pitrisporum folliculitis, more commonly known as dandruff.
P. orbiculare is a lipophilic fungus, meaning it requires fats to grow. It lives in the sebaceous glands and hair follicles of the skin. Overgrowth of P. orbiculare leads to the accumulation of scales on the surface of the scalp and the formation of dandruff. This is facilitated by factors such as stress, hormonal changes, increased skin moisture, and immune disorders.
To treat pitrisporum folliculitis, antifungal shampoos and lotions are used, as well as products that normalize the functioning of the sebaceous glands. Hygiene and regular hair washing also help control P. orbiculare overgrowth. For severe forms of dandruff, systemic antifungal drugs are prescribed.