sicknesses Definition

ill health : illness

a disordered, weakened, or unsound condition

a specific disease

altitude sickness that is experienced usually within several hours to one day of ascending above 8000 to 10,000 feet (about 2500 to 3000 meters) and that is marked by headache, nausea, loss of appetite, vomiting, insomnia, dizziness, and fatigue, and may lead to serious complications including severe edema of the brain or lungs —abbreviation AMS

the effects (such as headache, nausea, or swelling of the brain) of oxygen deficiency in the blood and tissues developed at high altitudes having reduced atmospheric pressure

affected with motion sickness especially in an automobile

a sometimes fatal condition that is caused by the release of gas bubbles typically of nitrogen as it leaves its dissolved form throughout the body upon a rapid decrease in barometric pressure (such as that experienced by the rapid ascent of a diver from a deep dive or the rapid ascent of a pilot to high altitudes in a poorly pressurized aircraft) and that is marked chiefly by joint pain which may be accompanied in mild forms by fatigue and itching or burning of the skin and in more severe forms by shortness of breath, chest pain, paralysis, and confusion —called also bends, caisson disease

an acute disease characterized by weakness, vomiting, and constipation and caused by eating dairy products or meat from cattle poisoned by various plants

tremble

nausea and vomiting that occurs typically in the morning especially during the earlier months of pregnancy

sickness induced by motion (as in travel by air, car, or ship) and characterized by nausea

altitude sickness experienced by mountain climbers or by those ascending or living especially above 8000 to 10,000 feet (about 2500 to 3000 meters) elevation and caused by insufficient oxygen in the air breathed; especially : acute mountain sickness

sickness that results from exposure to radiation and is commonly marked by fatigue, nausea, vomiting, loss of teeth and hair, and in more severe cases by damage to blood-forming tissue with decrease in red and white blood cells and with bleeding