Diseases & Conditions

Asthma is a chronic lung disease characterized by episodes of airway narrowing and obstruction, causing wheezing, coughing, chest tightness and shortness of breath.

Atopic dermatitis, also known as eczema, is a non-contagious inflammatory skin condition. It is a chronic disease characterized by dry, itchy skin that can weep clear fluid when scratched. People with eczema also may be particularly susceptible to bacterial, viral, and fungal skin infections.

NIAID is the lead Institute at the National Institutes of Health conducting research on food allergy, a condition that affects approximately 5 percent of children and 4 percent of adults in the United States. In a person with food allergy, the immune system reacts abnormally to a component of a food—sometimes producing a life-threatening response.