Definition and Relation to Skin Allergies
Cold urticaria is a skin reaction to cold temperatures, causing hives. It is a type of physical urticaria, fitting within skin allergies due to its immune response to environmental triggers.

Symptoms
Common signs include itchy welts or hives on skin exposed to cold. Triggers can be cold air, water, or objects.

Diagnosis
Diagnosis involves a cold stimulation test, where ice is applied to the skin to observe reactions.

Treatment Options
a. Avoidance of cold exposure.
b. Antihistamines like D-Lorinol (desloratadine) to manage symptoms.
c. In severe cases, other medications may be prescribed by a doctor.

When to Seek Specialist Care
Consult a dermatologist or allergist if symptoms are severe, persistent, or if there is difficulty breathing or swelling beyond hives.