If you have a lot of small rice grains on your back, consider closed acne, folliculitis, follicular keratosis pilaris and so on.
1. Closed acne: During puberty, androgens begin to increase in the body, and sebaceous glands become more and more exuberant, resulting in a large amount of oil secretion, when the follicular sebaceous gland ducts are narrowed or clogged acne will be formed, such as closed acne, which looks like a lot of small grains of rice.
2. Folliculitis: Skin breakage or lack of attention to personal hygiene can lead to pathogen infection, causing folliculitis, which is a more common skin disease, can occur in any part of the hair follicle, which is highly prevalent in the chest, back, the main manifestation is the isolation of the distribution of the many red pimples.
3. Follicular keratosis: this is a chromosomal dominant hereditary follicular keratosis abnormal skin disease, lesions have a tendency to merge, proliferation, high incidence in seborrhea more parts of the body, such as the back, the main manifestation is a hard papule covered with a cortical crust.
A lot of small rice grains on the back does not exclude other causes, it is recommended to go to the hospital, through the dermoscopy, sex hormone examination and other comprehensive diagnosis, and under the guidance of the doctor correct treatment.