Phimosis: Definition, Causes, and Management

Introduction to Phimosis

Phimosis is defined as the inability to fully retract the foreskin over the glans penis, which may lead to complications including painful erections, erectile dysfunction, and urinary issues, according to the British Journal of Dermatology 1

In adult men, phimosis commonly affects the prepuce, coronal sulcus, and glans penis, with the primary complaint being tightening of the foreskin, as reported by the British Journal of Dermatology 1, 3
The condition can result in erectile dysfunction, painful erections, and changes in urinary stream, as noted by the British Journal of Dermatology 1
In children, phimosis most frequently affects the prepuce, with reported incidence in children with phimosis ranging from 14% to 100%, according to the British Journal of Dermatology 3

Lichen sclerosus is a significant cause of phimosis in both adults and children, with approximately 30% of phimosis cases in adults attributed to LS, as stated by the British Journal of Dermatology 1
Other causes include chronic inflammation, balanitis, penile trauma, and poor hygiene, as identified by the Journal of the National Comprehensive Cancer Network 4
Phimosis may hinder proper inspection of the penis, increasing the risk of undetected conditions by 25-60%, according to the Journal of the National Comprehensive Cancer Network 4

Untreated phimosis can lead to painful erections and sexual dysfunction, as reported by the British Journal of Dermatology 1
Untreated phimosis can also lead to paraphimosis in uncircumcised men, as noted by Pediatrics 5
Urinary flow interruption and potential urethral obstruction are additional complications of untreated phimosis, as stated by the British Journal of Dermatology 1, 3
In rare cases, renal failure following meatal obstruction in children can occur, according to the British Journal of Dermatology 3
Increased risk of penile cancer is associated with lichen sclerosus, with a 2-9% risk in patients, as reported by the Journal of the National Comprehensive Cancer Network 4

The British Journal of Dermatology recommends topical steroid therapy as a first-line treatment for phimosis, with circumcision reserved for cases that fail to respond to medical management 1
For adults, applying clobetasol propionate 0.05% ointment once daily for 1-3 months, along with an emollient, is a recommended treatment, as stated by the British Journal of Dermatology 1
For children, applying betamethasone 0.05% ointment to the tight preputial ring twice daily for 4-6 weeks is a recommended treatment, according to the British Journal of Dermatology 3

Phimosis caused by lichen sclerosus may be less responsive to topical steroids and may require more intensive treatment or surgical intervention, as noted by the British Journal of Dermatology 1
During erection, tight foreskin can cause significant pain, difficulty with sexual intercourse, and increases the risk of paraphimosis, as reported by the British Journal of Dermatology 1
If circumcision is performed, the foreskin should always be sent for histological examination to exclude penile intraepithelial neoplasia, as recommended by the British Journal of Dermatology 1