**1. Introduction**

Scalp diseases are one of the most seen reasons for admission to dermatology clinics. There is a wide spectrum of different aetiologies for scalp lesions. This chapter will review cutaneous infections, infestations and neoplasms of the scalp. Examples of bacterial infections include folliculitis, folliculitis decalvans, tufted hair folliculitis and acne keloidalis nuchae. There will be some detailed information about fungal infections, such as tinea capitis, favus and kerion celsi. The neoplasms of the scalp represent a varied group of dermatoses. This review focuses on trichilemmal cyst, proliferating trichilemmal cyst, nevus sebaceous and cylindroma.
