Phimosis is a condition in which the foreskin of the penis becomes too tight and cannot be pulled back over the head of the penis. This can cause discomfort, pain, and other problems during sexual activity and daily life. Phimosis can be caused by a variety of factors, including poor hygiene, infections, injuries, medical conditions, and congenital abnormalities. Treatment for phimosis may include topical medications, stretching exercises, circumcision, or other surgical procedures, depending on the severity of the condition and the underlying cause.