Head lice (pediculosis capitis) are parasitic insects that live on the human scalp. They feed on human blood and can cause itching and skin irritation.

Perioral dermatitis is an inflammatory skin condition that usually affects the face. It manifests as red, itchy and scaly rashes that can spread around the mouth and on the nose and chin. The exact cause of the condition is unknown, but it is thought to be triggered by a combination of factors including skin care products, hormonal changes and diet.

Rosacea is a chronic skin condition characterized by persistent redness in the facial area. The exact cause of the condition is unknown, but it is thought to be due to genetic and environmental factors.

Pityriasis rosea is a common skin disorder characterized by a rash. It is a self-limiting condition that usually resolves on its own within weeks. The exact cause is unknown, but it is thought to be a viral infection. Pityriasis rosea is usually divided into two categories: Typical pityriasis rosea and Atypical pityriasis rosea.

Psoriasis is a chronic inflammatory skin disease caused by accelerated cell division in the skin. This causes red, scaly and often itchy skin lesions to form, which can appear on various parts of the body.

Senile wart, also known as seborrheic keratosis, is a benign skin tumor that usually develops in older age. The condition most commonly occurs in areas that are more frequently exposed to sunlight, such as the face, head, or hands.

Seborrheic eczema is a common, benign skin condition characterized by scaly, red skin rashes. It often occurs on the scalp, face and chest, but can also occur on other parts of the body.