Medicine. A state of body's abnormal functions are altered or hindered. Two workplace classifications include: (1) Heat Illness: A serious medical condition resulting from the body's inability to cope with a particular heat load and including heat cramps, heat exhaustion, heat syncope, and heat stroke. Occupational Illness: An ill health condition caused by exposure to a health hazard in the workplace. This may also be called industrial disease. It also pertains to all other occupational illnesses such as: Heatstroke, sunstroke, heat exhaustion, heat stress and other effects of environmental heat; freezing, frostbite, and other effects of exposure to low temperatures; decompression sickness; effects of ionizing radiation (isotopes, x-rays, radium); effects of non-ionizing radiation (welding flash, ultra-violet rays, lasers); anthrax; blood borne pathogenic diseases such as AIDS, HIV, hepatitis B or hepatitis C; brucellosis; malignant or benign tumors; histoplasmosis; coccidioidomycosis