A board-certified immunologist clears the air—turns out, there's only one time when allergies can lead to a fever.

All to know as hay fever warning issued by health officials. Hay fever affects almost 10m people in England, of all ages. Research shows that the number of sufferers is rising, ye ...

Common cold viruses include rhinoviruses, adenoviruses, human parainfluenza virus, and respiratory syncytial virus. Most resolve on their own with rest and over-the-counter medications. Share on ...