There are many signs that you may be dealing with allergies. These signs can include sneezing, red and swollen itchy eyes, nasal congestion, wheezing, hives (presented as red, raised patches on the skin) and rashes.
Allergies are the body overreacting to a harmless substance, also known as an allergen. When exposed to an allergen, the body will begin to produce antibodies against it, which activate mast cells located throughout the body. Mast cells tend to have higher concentrations in the airways, intestines and skin. Mast cells release chemicals, such as histamine, which causes many of the common symptoms of an allergic reaction.
Seasonal allergies to various outdoor weeds, grass, pollen and molds may come and go. Other common causes of allergies may come from cat and dog dander (the shed skin cells of pets). Food allergies to nuts or dairy can cause vomiting, cramps, and diarrhea. An allergic reaction presenting as hives, itching, wheezing or shortness of breath, tightness in the throat, and/or tingling in the limbs, lips, or scalp may be a sign of Anaphylaxis. Anaphylactic reactions are life threatening and require immediate medical help.