A cosmetic is any substance applied to the body for cleansing, beautifying, promoting attractiveness or altering the appearance. The fields of cosmetology and dermatology have now converged so that patients often present having had a reaction to a cosmetic or…
Some dermatologists specialize in the field of skin surgery. All registrars and residents in dermatology are trained in these techniques. An outline of the subject is given here, including the use of flaps, grafts and Mohs’ surgery, along with mention…
The demand for the removal of benign and malignant skin lesions has increased considerably, such that skin surgery is now practised by many general practitioners as well as by dermatologists. Knowledge of basic surgical techniques is mandatory for all those…
An interaction between natural sunlight and the skin is inescapable. The potential for harm depends on the type and length of exposure. Sunlight can help in certain skin diseases (p. 61). Both ultraviolet (UV)B and UVA are extensively used therapeutically.…
The introduction of the biological response modifiers has revolutionized the management of a number of previously difficult-to-treat conditions such as Crohn’s disease, rheumatoid arthritis and severe psoriasis. Biologics are based on recombinant cytokines, fusion proteins and mouse or human monoclonal…
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Cutaneous T-cell lymphoma (CTCL) is the most common type of skin lymphoma, with an incidence of 0.6 per 100 000 (in the USA). B-cell lymphoma of the skin is rare. Malignant tumours of the dermis are infrequent. The commonest are…
Malignant melanoma is a malignant tumour of melanocytes, usually arising in the epidermis. It is the most lethal of the main skin tumours and has increased almost sevenfold in incidence since the 1970s, but overall there is 90% survival at…
Squamous cell carcinoma (SCC) is a heterogeneous disease comprising clinically distinct but histologically similar entities with differing risk factors implicated in their aetiopathogenesis. Aetiopathogenesis SCC is derived from moderately well-differentiated keratinocytes. Ultraviolet (UV) radiation is clearly the strongest predisposing risk…
Malignant skin tumours are among the most common of all cancers. They are more frequent in light-skinned races, and ultraviolet (UV) radiation seems to be involved in their aetiology. The incidence of non-melanoma skin cancer in caucasoids in the USA…