Asthma is sudden onset of asthma attacks that usually stop on their own or as a result of the use of certain therapeutic measures. The duration and severity of the attacks are different. Depending on etiological and pathogenetic factors distinguish between bronchial asthma and cardiac asthma (see).
Asthma (from the Greek. Asthma – shortness of breath, suffocation) is a periodically occurring attack of sudden shortness of breath (suffocation). Between attacks, shortness of breath may be absent. An asthma attack usually occurs suddenly. In some cases, asthma is preceded by prodromal events. For example, an attack of bronchial asthma is often preceded by “stuffing”, tickling in the nose and copious discharge of mucus from the nasal cavity, discomfort in the throat.
The most known asthma is bronchial and cardiac. An attack of dyspnea in bronchial asthma is associated with impaired patency of the small bronchi (spasm, swelling of the mucous membrane), with cardiac asthma – with acute blood stasis in the pulmonary circulation and reflex spasm of the bronchi (see Bronchial asthma, Cardiac asthma).