Some are just very frustrating and annoying to most. However there are some people that have symptoms of allergies that can be very life threatening and dangerous. Do you know what the main symptoms of allergies are? Do you know what to look for when it comes to allergies?The most common symptoms are going to be the following: * Headache. Having a headache can be a very distractible problem. Many times it is hard to live a normal life and do the things that a person normally would do. * Hives. Having hives is something that will be annoying...