Frequencies considered especially dangerous occur where the human body can become resonant, at 35 MHz, 70 MHz, 80-100 MHz, 400 MHz, and 1 GHz. Exposure to microwaves of too high intensity can cause microwave burns. Types
Radiation dermatitis (also known as radiodermatitis) is a skin disease associated with prolonged exposure to ionizing radiation. : 131–2  Radiation dermatitis occurs to some degree in most patients receiving radiation 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. : 39–40  Radiation therapy can also cause radiation cancer. : 40 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. : 773 Radiation dermatitis, in the form of intense erythema and vesiculation of the skin, may be observed in radiation ports. : 131 As many as 95% of patients treated with radiation 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 radiation is given to the skin, after which visible erythema appears up to 24 hours after. : 39   Radiation dermatitis generally manifests within a few weeks after the start of radiotherapy. : 143   Acute radiodermatitis, while presenting as red patches, may sometimes also present with desquamation or blistering.
Neurosurgery can range from removing an entire hemisphere (hemispherectomy), a small lesionectomy, or multiple transsections to try to disconnect the abnormal tissue from the rest of the brain (multiple subpial transsections). Physical therapy should be considered for infants and children with muscle weakness. Educational therapy is often prescribed for those with developmental delays, but there is no complete treatment for the delays. See also
Gray matter heterotopia

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