These are some things that might cause allergy. The month you were born in makes a little difference to your chance of getting hay fever. A person's chance of getting hay fever is higher if they have less brothers or sisters. If you live in a country without pollen you will not get hay fever. Sicknesses caused by immediate hyper sensitivity are hay fever, infantile eczema. If you have bad allergies it is unlikely for your children to have bad allergies. The last thing is that people get eczema-like rash names contact dermatitis from nickel on jewelry, watches, and clothing items. Symptoms of allergies are things that will happen after touching, eating, breathing in, or drinking. Allergic symptoms can be categorized as mild, moderate, or severe. Mild reactions include local symptoms such as a rash, hives, itchy and watery eyes. Moderate reactions include symptoms that can spread to other parts of the body. A severe allergic reaction is called anaphylaxis. It is very rare, but life threatening. Anaphylaxis may begin with severe itching and can within minutes progress to serious symptoms including swelling. That result in difficulty swallowing and breathing. Other symptoms of anaphylaxis are abdominal pain, cramps, vomiting, diarrhea, or hives. Mental confusion or dizziness also may be signs, since anaphylaxis causes a quick drop in blood pressure. Children with indoor allergies may have difficulties concentrating during school hours. Sneezing and coughing can also have a disturbing effect on other class members. Because of allergies children don’t seem to remember things constantly as they used too. Mood and behavior changes are common because of allergies. Allergies may cause symptoms of asthma, congestion, intestinal, and skin problems.