Dermatology is defined in The New Oxford Dictionary of English as ‘The branch of medicine concerned with the diagnosis and treatment of skin disorders’. However, dermatologists do not confine themselves merely to a study of intrinsic disorders of the skin, but must also study internal medicine and the many environmental and occupational factors that so frequently cause skin problems.
A plethora of external factors, including numerous chemicals, can adversely affect the skin in some circumstances. The clinical dermatologist must be knowledgeable about these potential hazards, and this will often require a detailed study of the multiplicity of chemicals, plants, animals, parasites, microorganisms, radiation, climatic conditions, etc. to which the skin is exposed. In many cases, the dermatologist will need to obtain exact details of what is involved in the patient’s occupation and hobbies, and many dermatologists build up a considerable knowledge of the different jobs involved in their local industries.
Dermatology is the study of the skin and its appendages and their related diseases, it comprise the study of the normal anatomy and histology of skin and their function, etiology, pathophysiology, clinical manifestation, diagnosis, treatment and prevention. Whilst Venereology focus on sexually-transmitted diseases (STDs) which include their etiology, transmission, clinical manifestation, diagnosis and treatment.