There are many reasons for the red spots on the face after running and bathing, such as allergic dermatitis, urticaria, eczema, and so on. 1. Allergic dermatitis: erythema on the face after running and bathing may be due to the patient’s allergy to shampoo, facial cleanser and other toiletries, usually in the avoidance of allergens can gradually improve. 2. Urticaria: Urticaria can also lead to erythema on the face after running and bathing, especially cholinergic urticaria, which usually strikes when the body temperature rises. After running, the body temperature will increase, so it may trigger the urticaria attack, which will lead to red spots on the face after running and taking a shower. 3. Eczema: environmental humidity and other factors can induce eczema, due to running a lot of sweat, skin moisture, so there may be running after the bath face red spots, pimples phenomenon, accompanied by itching. There are many reasons for erythema on the face after running and showering, and it is recommended to go to the hospital in time to improve the examination after the symptoms appear, and take standardized treatment according to the doctor’s instructions, and not to ignore the symptoms and take them lightly.