Allergic skin reactions are caused by many reasons. Atopic Dermatitis, hives and Allergic contact dermatitis are the most common types of skin allergies. In Atopic Dermatitis skin may become red, irritated and itchy. Atopic Dermatitis is often linked with food allergy, allergic rhinitis and asthma. Sometimes small, fluid-filled bumps are formed on the skin. Hives are the red bumps that appear on the body when the immune system releases histamine. Review articles are the summary of current state of understanding on a particular research topic. They analyze or discuss research previously published by scientist and academicians rather than reporting novel research results