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"Dandruff" is the term used in Engpsh to describe flaky skin on the scalp. If someone has dandruff, their scalp may feel itchy and irritated, and they may notice small, white flakes of skin in their hair or on their shoulders. Dandruff is a common condition that can be caused by a variety of factors, including dry skin, a yeast-pke fungus called Malassezia, and certain skin conditions such as seborrheic dermatitis or psoriasis. It is usually treatable with over-the-counter shampoos or other products that contain ingredients such as ketoconazole, pyrithione zinc, or sapcypc acid. If dandruff persists despite treatment or is accompanied by other symptoms, it is a good idea to consult a dermatologist or other medical professional for further evaluation and treatment.