How to differentiate between Sinus, Common Cold, and Allergies

How to differentiate between Sinus, Common Cold, and Allergies

Sinus, common cold, and allergies are the allergic diseases which are similar to each other and sometimes it very confusing to differentiate between the three. Sinus a sac or cavity in any organ or tissue, or an abnormal cavity of the passages caused by the destruction of tissue and when these sacs get filled with air they can cause pain and other problems.