What causes rash on arms

A rash on the arm is a common skin disease. Most of the time, the cause may be allergic urticaria. At this time, on the one hand, you should pay attention to keeping warm, and on the other hand, you can take some medication for treatment. The more common medications include Cismin, vitamin C tablets, Shiduqing capsules, etc. In addition, you can also use some external ointments to wipe it, and the effect is also quite good.

What are the causes of urticaria?

1. Dust: It is very common for dust to cause cold urticaria, which is a disease reaction caused by microorganisms living and multiplying in the dust. Dust that can cause illness includes cotton fibers, fur and various plant fibers, animal fur, etc.

2. Food: Cold food can easily cause cold urticaria, so try to avoid it after you get the disease. Common foods that can cause cold urticaria include seafood, mangoes, nuts, coriander, peppers, strawberries, bananas, etc. Not only cold food, but patients should also avoid eating food that is easy to cause inflammation, which will stimulate the onset of urticaria.

3. Drugs: The abuse of penicillin, sulfonamides, etc. may induce "cold urticaria symptoms", and the drugs will reduce the body's immunity, making the disease more severe than other patients.

4. Pets: If you have pets at home, it is easy to cause cold urticaria. The main reason is that the hair, bacteria, dirt, etc. on cats and dogs float into the air, and human body contact with these substances may cause symptoms of cold urticaria.

5. Temperature changes: The sudden changes in indoor temperature can also cause cold urticaria, and for patients who already have cold urticaria, temperature changes can make the condition worse.

6. Seasonal changes: Due to seasonal environmental factors, such as spores and pollen floating in the air in spring, these substances can easily cause allergic reactions, causing the human body to release a large amount of histamine, leading to cold urticaria.

7. Pollen: Pollen is a type of allergen. Especially in the spring, tiny pollen particles will be scattered in the air and easily absorbed by the human body.

8. Cosmetics: Cosmetics can cause skin allergies and cold urticaria, especially cosmetics containing alcohol such as astringents, which can cause irritation to the skin. In addition, other preservatives, fruit acids, etc. may also cause irritation to allergic skin.

Tips for preventing urticaria

1. Adjust your diet properly.

People with allergic constitution should eat less foods that are likely to cause skin allergies, such as seafood, soy products, etc. In daily life, we should pay attention to eating less spicy and irritating foods, quit bad habits of smoking and drinking, take appropriate calcium supplements, increase the intake of fruits rich in vitamin C, and strengthen our physical fitness.

2. Pay attention to personal hygiene habits.

Pay attention to daily hygiene, especially keep the armpits, perineum, breasts and other areas clean. Wear loose, cotton underwear and avoid tight clothing. Try to avoid using too much cosmetics and facial cleansers and toners with high chemical ingredients. Avoid excessive use of soap, rubber gloves, hair dye and other irritants that may cause skin allergies.

3. Avoid internal and external infections.

Understand your own physical condition and avoid using medicines that may cause allergies. When the skin is bitten by mosquitoes or has knife wounds or burns, clean the affected area in time to avoid infection caused by bacterial growth.