What is Asthma? Causes, Signs and Symptoms, Diagnosis and Treatment.

Asthma can be minor or it can interfere with daily activities. In some cases, it may lead to a life-threatening attack.
Asthma may cause difficulty breathing, chest pain, cough and wheezing. The symptoms may sometimes flare up.
Asthma can usually be managed with rescue inhalers to treat symptoms (salbutamol) and controller inhalers that prevent symptoms (steroids). Severe cases may require longer-acting inhalers that keep the airways open (formoterol, salmeterol, tiotropium), as well as inhalant steroids.