Asthma is a sudden acute asthma attacks, usually ending independently or as a result of application of those or other therapeutic measures. The duration and severity of seizures different. Depending on etiological and pathogenetic factors distinguish between bronchial asthma and cardiac asthma (see).

Asthma (from the Greek. asthma - dyspnea, shortness of breath) - periodically coming sharp attacks of breathlessness (dyspnea). In between bouts of breathlessness can be absent. An asthma attack usually occurs suddenly. In some cases, asthma preceded by prodromal phenomenon. For example, the attack of bronchial And, often preceded by "planting", the tickle in his nose and abundant mucus from the nasal cavity, unpleasant sensations in the throat.
The most famous bronchial asthma and heart. Attack of breathlessness in bronchial A. associated with impaired patency of the small bronchi (spasm, swelling of mucous membrane), in heart A. - with sharp stagnation of blood in the pulmonary circulation and reflex spasm of the bronchi (see Bronchial asthma, Cardiac asthma).