Signs and symptoms of urticaria include:
- Batches of red or skin-colored welts (wheals)
- Welts that vary in size, change shape, and appear and fade repeatedly as the reaction runs its course
- Itching
- Painful swelling (angioedema) of the lips, eyelids and inside the throat
- Flare with triggers such as heat, exercise and stress
- Persist for more than six weeks and to recur frequently and unpredictably, sometimes for months or years
