<unk>  dermatitis (also known as radiodermatitis) is a skin disease associated with prolonged exposure to ionizing<unk> .<unk>  dermatitis occurs to some degree in most patients receiving<unk>  therapy, with or without chemotherapy. There are three specific types of radiodermatitis: acute radiodermatitis, chronic radiodermatitis, and eosinophilic, polymorphic, and pruritic eruption associated with radiotherapy.<unk>  therapy can also cause<unk>  cancer. With interventional fluoroscopy, because of the high skin doses that can be generated in the course of the intervention, some procedures have resulted in early (less than two months after exposure) and/or late (two months or more after exposure) skin reactions, including necrosis in some cases.<unk>  dermatitis, in the form of intense erythema and vesiculation of the skin, may be observed in<unk>  ports. As many as 95% of patients treated with<unk>  therapy for cancer will experience a skin reaction. Some reactions are immediate, while others may be later (e.g., months after treatment). Acute Acute radiodermatitis occurs when an "erythema dose" of ionizing<unk>  is given to the skin, after which visible erythema appears up to 24 hours after.<unk>  dermatitis generally manifests within a few weeks after the start of radiotherapy. Acute radiodermatitis, while presenting as red patches, may sometimes also present with desquamation or blistering. Erythema may occur at a dose of 2 Gy<unk>  or greater. Chronic Chronic radiodermatitis occurs with chronic exposure to "sub-erythema" doses of ionizing<unk>  over a prolonged period, producing varying degrees of damage to the skin and its underlying parts after a variable latent period of several months to several decades. In the distant past this type of<unk>  reaction occurred most frequently in radiologists and radiographers who were constantly exposed to ionizing<unk> , especially before the use of X-ray filters. Chronic radiodermatitis, squamous and basal cell carcinomas may develop months to years after<unk>  exposure. Chronic radiodermatitis presents as atrophic indurated plaques, often whitish or yellowish, with telangiectasia, sometimes with hyperkeratosis. Other Eosinophilic, polymorphic, and pruritic eruption associated with radiotherapy is a skin condition that occurs most often in women receiving cobalt radiotherapy for internal cancer.<unk> -induced erythema multiforme may occur when phenytoin is given prophylactically to neurosurgical patients who are receiving whole-brain therapy and systemic steroids. Delayed effects<unk>  acne is a cutaneous condition characterized by comedo-like papules occurring at sites of previous exposure to therapeutic ionizing<unk> , skin lesions that begin to appear as the acute phase of<unk>  dermatitis begins to resolve.<unk>  recall reactions occur months to years after<unk>  treatment, a reaction that follows recent administration of a chemotherapeutic agent and occurs with the prior<unk>  port, characterized by features of<unk>  dermatitis. Restated,<unk>  recall dermatitis is an inflammatory skin reaction that occurs in a previously irradiated body part following drug administration. There does not appear to be a minimum dose, nor an established radiotherapy dose relationship.
Radiation burn
Chemical burn
Thermal burn
Electrical burn
Friction burn
Hydrofluoric acid burn
Powder burn
Toxic granulation