It all started when the woman's co-workers ramped up the air conditioning. For some reason, she broke out in hives. Concerned, the woman visited the doctor and got startling news: She was allergic to the cold.
The condition, known as cold urticaria, is rare, but it jibed with past her experiences, the woman's doctors wrote in a new Australian case report, published online April 3 in the journal Climacteric
. The 40-year-old woman said that she also got hives on windy days, while walking outside on cold mornings, and after swimming in the ocean.