Pimples on the nose usually refers to acne in clinical practice, and its possible causes include genetic factors, increased androgen levels, abnormal keratinization of follicular sebaceous gland ducts, and inappropriate skin care practices. 1. Genetic factors: Acne is hereditary, if parents have acne, then the next generation will be more likely to suffer from the disease, which may lead to pimples on the nose. 2. Increased androgen levels: Androgen promotes sebum secretion. If the level of androgen increases in the body, it can lead to a large amount of sebum secretion, thus causing acne on the nose. 3. Abnormal keratinization of follicular sebaceous gland ducts: When the follicular sebaceous gland ducts are over-keratinized, the duct opening becomes smaller and blocked, and the sebum can not be discharged from the body, which may induce acne, manifesting itself in the form of pimples on the nose. 4. Improper skincare: Using oily skincare products or rubbing your nose vigorously may also cause pimples on the nose. There are many causes of nose acne, so it is advisable to go to the hospital for a checkup to determine the cause.