If you are one of the millions of people who suffer with allergies from pollen, you don’t need a calendar to tell you that spring has started. Sometimes called hay fever, allergic rhinitis can be confused with a cold. So what’s happening? What can you do? While hay fever alone may not be life threatening, it can be uncomfortable, says Dr. Arveen Bhasin, a Mayo Clinic allergy and immunology expert. She offers these tips for relief from spring pollen…