What’s wrong with itchy red bumps on the skin when it’s cold and windy?

Red bumps on the skin when exposed to cold and wind can be a symptom of eczematous dermatitis or cold-derived urticaria.
When red itchy bumps appear on the skin after exposure to cold wind, the first step in identifying the cause of the disease is to look closely at the appearance of the bumps.
If the red itchy bumps do not go away on their own and are mainly red papules, it is possible that they are intolerant to certain substances present in the cold air, resulting in an allergic reaction, which can lead to eczema-like dermatitis lesions.
If the bumps appear as flat bumps scattered throughout the skin and have an edematous appearance when scratched with the hand, it is considered to be a cold urticaria, which is a skin intolerance to cold stimuli and causes mast cell degranulation, resulting in the formation of a chilblain-like skin change.
For further clarification of the cause and treatment, it is recommended to go to the dermatology department of the hospital in time to be diagnosed by the doctor and treated under the doctor’s guidance.