Suddenly developed red rashes all over the body, extremely itchy, what should I do?

Sudden onset of widespread red rashes accompanied by intense itching may indicate an allergic reaction, such as food allergy, drug allergy, or contact dermatitis; it could also be caused by infectious diseases, such as viral rash, rubella, measles, etc.

Gently rinse the skin with clean water, but avoid excessively hot or cold water, as well as irritating soaps or shower gels. Wear loose, soft cotton clothing to avoid irritating the skin.

If the itching is extremely severe and affects sleep or quality of life, oral antihistamines such as loratadine or cetirizine may be taken under medical guidance to relieve the symptoms.

Before the cause is clearly identified, do not use medications or folk remedies on your own, as this may delay proper treatment.