Diathermy is the use of an electrical current to produce heat. This heat is used to cauterise (seal or coagulate) tissue and blood vessels. Electro-cauterisation offers a unique and preferable treatment procedure to eliminate vascular lesion and small skin tags.
Vascular lesions occur when there is a concentration or enlargement of fine blood vessels. The medical term for these unsightly vascular blemishes is telangiectasia. Telangiectasia are small dilated capillaries commonly called “broken capillaries” (“broken capillaries” would bleed under the skin and form a bruise, but this is not the case), thread veins, cherry angiomas (blood spots), spider naevi and spider veins (a small cluster that resembles a spider or star) which are usually dull or bright red. Whatever physical form the telangiectasia take, they are by definition, dilated blood vessels.
There are many causes of Telangiectasia, hereditary plays a significant role in the development of these lesions. Hereditary Telangiectasia is a congenial weakness in the blood vessel walls. Telangiectasia may be present at birth while some other common causes are ageing, sun exposure, skin injury such as an abrasion, medical conditions such as high blood pressure or temperature extremes of both hot and cold.
Diathermy can successfully treat smaller dilated blood vessels without injuring the surrounding healthy skin, whilst IPL is the preferred method for treating larger telangiectasia. Dilated capillaries of the upper or superficial dermis are essentially dysfunctional. They carry blood but are too large to nourish cells effectively. Hence the treatment causes no risk to the health of the skin.