What condition is characterized by the accumulation of dead skin cells and can be referred to as dandruff?

The condition characterized by the accumulation of dead skin cells that can be commonly referred to as dandruff is known as Pityriasis. This term specifically describes the flaking of the scalp that results from the shedding of dead skin. Pityriasis is associated with the renewal of skin cells, which can sometimes occur in excessive amounts leading to visible flakes.

Pityriasis is often related to a variety of factors including dry skin, oily skin, and even an overgrowth of a fungus known as Malassezia. The condition can manifest in several forms, such as dry, white flakes that fall from the scalp.

Other options refer to different conditions: Pediculosis involves an infestation of lice; Pityriasis steatoides is a more severe form of dandruff typically associated with greasy flakes and scalp inflammation; and Scalp psoriasis is a chronic condition characterized by red, scaly patches that can also cause flaking, but it is distinct from the more benign flaking associated with Pityriasis. Therefore, Pityriasis accurately describes the condition primarily linked with dandruff and the accumulation of dead skin cells on the scalp.