Allergy and acne on the face is actually not a formal medical problem; allergy is allergy and acne is acne. Allergy refers to the allergic phenomenon of redness, swelling and itching on the face after using inappropriate skin care products and cosmetics, or contacting some allergic substances, such as mango and pineapple. Acne is acne, the cause of its origin is not allergy, but the influence of endocrine, that is, excessive secretion of androgens or excessive localized androgen receptors on the face to promote the sebaceous glands overproduction caused by the blockage will grow acne, and even some will be infected resulting in redness, swelling and pain. So acne is an endocrine factor, while allergy is a factor of allergens, red spots and pimples on the face, you should consult a doctor in a timely manner, according to the specific circumstances to distinguish between allergies or acne, using symptomatic treatment.