injuries poisoning
Motion Sickness
Symptoms and Signs of Motion Sickness
Characteristic manifestations of motion sickness are nausea, vomiting, pallor, diaphoresis, and vague abdominal discomfort. Other symptoms, which may precede the characteristic manifestations, include yawning, hyperventilation, salivation, and somnolence. Aerophagia, dizziness, headache, fatigue, weakness, and inability to concentrate may also occur. Pain, shortness of breath, focal weakness or neurologic deficits, and visual and speech disturbances are absent. With continuous exposure to motion, patients often adapt within several days. However, symptoms may recur if motion increases or if motion resumes after a short respite from the inciting trigger. Prolonged vomiting due to motion sickness may rarely lead to dehydration with hypotension, inanition, and depression. 