Allergy symptoms occur when your body’s immune system overreacts to substances in your environment. Food allergies arise from sensitivity to chemical compounds in food. Allergic reactions to food can cause serious illness and, in some cases, death. The foreign protein that causes the reaction is known as an allergen. In food allergy, a particular type of food is the allergen.

Food allergens are proteins in the food that enter your bloodstream after the food is digested. From there, they go to target organs, such as your skin or nose, and cause allergic reactions. An allergic reaction to food can take place within a few minutes to an hour. The most common food allergies in adults are shellfish, peanuts, tree nuts, fish, and eggs and the most common food allergies in children are milk, eggs, peanuts, and tree nuts.

It is common observed that you cannot get allergic symptoms the first time you eat a new kind of food. But because traces of foods are found within other foods, you may not be aware of the first time you came into contact with a particular allergen. After the food is digested in your stomach; you may have GI symptoms such as vomiting, diarrhea, or pain. The onset of these symptoms may vary from a few minutes to an hour or two after the food is eaten. People can be allergic to any food, but eight common allergens account for most food allergy reactions. They are Milk, eggs, peanuts, soy, wheat, tree nuts, fish and shellfish.

Allergies are versatile. They can affect your nose, eyes, throat, lungs, stomach, skin and nervous system. Allergy symptoms occur when your body’s immune system overreacts to substances in your environment.

People take antibiotics when there is infection, which is caused by bacteria. Antibiotics can cause allergic reactions. The diagnosis of antibiotic allergy is rarely clear-cut. It is often not clear whether the symptoms are due to the patient’s underlying condition or to the treatment. Common side effects of antibiotics includes upset stomach, diarrhea, and in women, vaginal yeast infections.

Many people have had allergic reactions to antibiotics. Several different types of rashes can appear while people are taking antibiotics. Rash is the main symptom, it is often difficult to determine whether the cause was the antibiotic, or the infection that prompted its use. Rashes involve hives (raised, intensely itchy spots that come and go over hours.

Some people are allergic to certain antibiotics. Penicillin is the most common cause of serious allergic drug reactions in children as in adults. Anaphylaxis is a sudden life threatening allergic reaction and usually includes swelling of the throat, inability to breathe, and low blood pressure.