How does red knot rise on the face very itch to do

Red pimples on the face are itchy. It may be an allergic phenomenon caused by contact with allergens. Suggestions: You should stop using any cosmetics at present, wash your face with clean water, and then go to the hospital for an allergen test. Avoid contact later. At the same time, take loratadine tablets orally, and use calamine lotion externally to relieve symptoms.