I play basketball and i just recently have gotten hives after a game! it starts when my ears become numb then spreads all over my body! help please?

Hives from sweat: If this haas happened more than once then i suggest that you see your local allergist. You may very well have cholinergic urticaria.

Cholinergic urticari: It's type of hive occurs with increases on core body temperature ie. With fever, exercise, or hot shower/bath. Mostly just uncomfortable, but on occasion this progresses to exercise induced anaphylaxis (trouble breao.

Antihistamine: Take certraline or Loratadine before exercise. If 1 pill fails to stop it take 2.