What type of dandruff is characterized by severe scaling?

The type of dandruff characterized by severe scaling is indeed associated with pityriasis steatoides, commonly referred to as "pityriasis steroids." This condition involves a significant amount of flaking due to the excessive buildup of skin cells on the scalp. Pityriasis steatoides typically manifests with yellowish scales that can be greasy in texture, distinguishing it from other forms of dandruff that may present with less severe flaking and different characteristics.

In contrast, the other conditions mentioned, such as pityriasis simplex and pityriasis mild, typically feature milder symptoms and may not have the same level of scaling. Pityriasis lactea, while also a form of dandruff, is characterized more by white scales rather than the severe scaling found in pityriasis steatoides. Understanding these distinctions helps in the diagnosis and treatment of scalp conditions.