Skin conditions listed in alphabetic order...
Acne is the inflammation of the oil glands of the skin. The oil glands of the skin are known as sebaceous glands and produce sebum. The glands vary in size during life and become enlarged during teenage years with the onset of puberty.
Impetigo is a skin infection that's very contagious but not usually serious. It often gets better in 7 to 10 days if you get treatment. Anyone can get it, but it's very common in young children.
The squamous cell carcinoma is also known as an SCC for short. This is a more aggressive tumour than a basal cell carcinoma, which can spread to local lymph nodes, though this is rare it is important.
Cutaneous malignant melanoma is a cancer of the pigment cells of the skin. If it is treated early, the outlook is usually good. It is not contagious.