Cystic fibrosis (CF) is an inherited condition caused by a defective gene (CFTR – Cystic Fibrosis Transmembrane Conductance Regulator) which causes the body to produce abnormally thick and sticky fluid, called mucus.
A drug allergy is the abnormal reaction of your immune system to a medication. A drug allergy occurs when your immune system mistakenly identifies a drug as a harmful substance, such as a virus or bacterium.
Asthma is a chronic lung disease that inflames and narrows the airways (the tubes that carry air into and out of your lungs). Asthma causes recurrent wheezing , chest tightness, shortness of breath, and cough.