Problem periods. Itâs common to have cramps or feel uncomfortable when you have your period. And itâs common to sometimes have periods that donât come on a regular schedule when you first start getting them.
Nevus sebaceous on the scalp. Nevus sebaceus or sebaceous nevus (the first term is its Latin name, the second term is its name in English; also known as an Organoid nevus and Nevus sebaceus of Jadassohn) is a congenital, hairless plaque that typically occurs on the face or scalp.
Cytology, more commonly known as cell biology, studies cell structure, cell composition, and the interaction of cells with other cells and the larger environment in which they exist. The term cytology can also refer to cytopathology, which analyzes cell structure to diagnose disease.