The allergy to chlorine is actually much more uncommon than what a person might think. The chemical called chlorine such as that from the swimming pool can cause skin irritations such as rashes, itching and inflammation. However, this does not indicate an allergy. It may also have an effect on other allergies such as those that cause asthma attacks but this still not does mean that the particular person in question has an allergy.
Chlorine is a toxic substance that can cause many different symptoms when an individual comes into contact with it. Constant exposure to chlorine such as that in pools can make a person develop an actual allergy to the chemical over time but this is also rare. Often times, the substance starts a reaction that is because of another condition or allergy.
In the event that a person has reactions to chlorine such as rashes, itchiness, inflammation, shortness of breath, and other similar things, they are recommended to see a doctor.