A) Frostbite :exposure to severe clod leads to vasoconstriction of the arterioles and capillary thrombi ending by gangrene of the fingers, toes,ears and nose. B) Heat stroke : Exposure to High temperature leads to excessive sweating and vasodilatation with loss of sodium and water ending by hypotenion ,hyperkalemia,dehydration and hypoxia . C) Electrical injury :The injury depends on the severity of the electric current and duration of contact .It leads to skin burns , bone fracture m rupture of organs and vessels and sudden death due to carsiac or respiratory distress. D) Radiation injury :1- Skin :early manifestations include dermatitis .Late manifestations Include cancer 2- GIT :mucosal injury and ulceration .later on fibrosis occurs . 3- Testis and ovary :destruction of germ cells and later on fibrosis and sterility . 4- lung :edema and acute respiratory didtress and later on fibrosis. 5- Hemopoeitic and lymphoid destruction leading to pancytopenia and lymphopenia . 6- radiation nephritis , osteomyelitis , vascular inflamation and thrombosis. Source :Medical Inspiration: Diseases due to Environmental factors(physical injury)
