Phimosis
| Phimosis | |
|---|---|
 |
|
| An erect penis with a case of phimosis | |
| Pronunciation | /fɪˈmoʊsᵻs/ or /faɪˈmoʊsᵻs/ |
| Classification and external resources | |
| Specialty | Urology |
| ICD-10 | N47 |
| ICD-9-CM | 605 |
| DiseasesDB | 10019 |
| eMedicine | emerg/423 |
| MeSH | D010688 |
Phimosis is a condition in which the foreskin of the penis cannot be pulled back past the glans. A balloon-like swelling under the foreskin may occur with urination. In teenagers and adults, it may result in pain during an erection, but is otherwise not painful. Those affected are at greater risk of inflammation of the glans, known as balanitis, and other complications.
In young children, it is normal to not be able to pull back the foreskin. In more than 90% of cases, this inability resolves by the age of seven, and in 99% of cases by age 16. Occasionally, phimosis may be caused by an underlying condition such as scarring due to balanitis or balanitis xerotica obliterans. This can typically be diagnosed by seeing scarring of the opening of the foreskin.
Typically, it resolves without treatment by the age of three. Efforts to pull back the foreskin during the early years of a boy's life should not be attempted. For those in whom the condition does not improve further time can be given or a steroid cream may be used to attempt to loosen the tight skin. If this method, combined with stretching exercises, is not effective then other treatments such as circumcision may be recommended. A potential complication of phimosis is paraphimosis, where the tight foreskin becomes trapped behind the glans. The word is from the Greek phimos (φῑμός), meaning "muzzle".
At birth, the inner layer of the foreskin is sealed to the glans penis. The foreskin is usually non-retractable in early childhood, and can be as late as 18.
Medical associations advise not to retract the foreskin of an infant, in order to prevent scarring. Some argue that non-retractability may "be considered normal for males up to and including adolescence." Hill states that full retractability of the foreskin may not be achieved until late childhood or early adulthood. A Danish survey found that the mean age of first foreskin retraction is 10.4 years.
Rickwood, as well as other authors, has suggested that true phimosis is over-diagnosed due to failure to distinguish between normal developmental non-retractability and a pathological condition. Some authors use the terms "physiologic" and "pathologic" to distinguish between these types of phimosis; others use the term "non-retractile foreskin" to distinguish this developmental condition from pathologic phimosis.
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Wikipedia