Humira won Food and Drug Administration approval as a treatment for psoriatic arthritis in 2005. In 2008, it was approved for the treatment of psoriasis. Patients take it by injecting it under the skin. Common side effects of the drug include headaches, upper respiratory tract infections and urinary tract infections.
1 Colds are caused by a virus that is passed from person to person, and the typical symptoms include congestion and coughing. A fever is often present, but because colds are viral, antibiotics will not help.  Flus are also caused by viruses, and tend to be more severe than the common cold.
One way to tell the difference between allergies and a contagious infection is that allergies typically donât cause symptoms such as fever and body aches. Avoiding your triggers is the best way to ward off allergy symptoms.