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food (e.g., seafood, nuts or strawberries);
contact with cosmetics, detergents or plants.
An allergic rash is often accompanied by itching, swelling, or burning. To prevent a recurrence, it is important to determine the exact cause through allergy tests and a consultation with an allergist.
Skin cancer
Not all red spots are harmless. In some cases, they can be an early sign of skin cancer, particularly melanoma, the most dangerous form.
Signs to watch for:
spots that change color or shape;
formations that do not heal over time;
areas of bleeding or peeling skin.
Early detection of skin cancer increases the chances of a complete cure. See a dermatologist at least once a year, especially if you have fair skin, many moles, or a family history of the disease
