Any substance that can cause an allergy
- (al-ler-gic )
Caused by an allergy
- (al-ler-gy )
Small scales from animal skin/hair or bird feathers
A chemical present in cells throughout the body that is released during an allergic reaction. Histamine dilates blood vessels and makes the vessel walls abnormally permeable. Its release causes itching, sneezing, increased mucous production, and nasal congestion, skin rashes, besides a host of other symptoms.
- (im-mu-ni-ty )
The body system, made up of many organs and cells, which defends the body against infection, disease and foreign substances.
- (in-tra-der-mal )
Relating to areas in between the layers of the skin
Fungus that grows on damp, decaying organic matter
An inflammation of the mucous membrane lining the nose
The state of being susceptible, vulnerable