Scalp problems in the pharmacy

Abstract

The scalp covers the top of the head and comprises five layers of tissue, the first letters of which conveniently spell scalp: • Skin: Skin contains hair follicles, sweat glands, many sebaceous glands, arteries, and veins. The skin of the scalp is relatively thick and is usually hairy. • Connective tissue: Connective tissue contains dense fibrous and fatty tissue, arteries, veins, lymphatic vessels and cutaneous nerves. Wounds that penetrate this layer tend to bleed profusely because the dense tissue does not retract and close blood vessels in the way that other tissues do. • Aponeurosis: The aponeurosis is a thin (1–2 mm thick) tendinous layer. • Loose areolar tissue: Loose areolar tissue connects the aponeurosis to the pericranium. It is predominantly vascular. • Pericranium: The pericranium is the tissue enveloping the bones of the skull. Permission was not granted for electronic publication of this article. Please refer to the hard copy.