Symptoms

Cold urticaria signs and symptoms may include:

• Temporary reddish, itchy welts (hives) on the area of skin that was exposed to cold
• A worsening of the reaction as the skin warms
• Swelling of hands while holding cold objects
• Swelling of lips from consuming cold food or drink

Severe reactions may include:

• A whole-body response (anaphylaxis), which can cause fainting, a racing heart, swelling of limbs or torso, and shock
• Swelling of the tongue and throat, which can make it difficult to breathe

Cold urticaria symptoms begin soon after the skin is exposed to a sudden drop in air temperature or to cold water. Damp and windy conditions may make a flare of symptoms more likely. Each episode may persist for about two hours.

The worst reactions generally occur with full skin exposure, such as swimming in cold water. Such a reaction could lead to loss of consciousness and drowning.

When to see a doctor

If you have skin reactions after cold exposure, see your doctor. Even if the reactions are mild, your doctor will want to rule out underlying conditions that may be causing the problem.

Seek emergency care if after sudden exposure to cold you experience a whole-body response (anaphylaxis) or difficulty breathing.