呃逆是指各种原因引发的、不自主的膈肌痉挛,导致的呼吸肌收缩。在呼吸肌收缩终末时,声带突然关闭,伴发出一种短暂的特殊的高调声音。呃逆是一种常见症状,可见于正常人,如快速吞咽干燥食物而同时较少饮水时,或在饱餐、饮酒、过度吸烟、精神过度紧张时。一般持续时间不长,多可自行消失。某些器质性疾病,如膈下脓肿等,可引发呃逆 Hiccup refers to a variety of causes, involuntary diaphragmatic spasm, resulting in respiratory muscle contraction. At the end of respiration muscle contraction, the vocal cords suddenly shut off, with a brief special high-pitched sound. Hiccups are a common symptom found in normal people, such as when swallowing dry food quickly while drinking less water, or when eating, drinking, over smoking, or over-stressed. General duration is not long, many can disappear. Some organic diseases, such as subphrenic abscesses, can cause hiccups