Balanitis and genital dermatoses

01OverviewDefinition, clinical context and the essential points that orientate the chapter.

Assessment begins with duration, pain, itch, discharge, odour, dysuria, urinary stream and ability to return the foreskin over the glans. Ask about cleansing, wipes, lubricants, condoms, topical products, medicines, recent antibiotics, diabetes symptoms, incontinence and immune suppression. With privacy and permission, take a gender- and sexuality-inclusive sexual history covering partners, anatomical sites and practices, barrier use and previous infections. Explain confidentiality and its limits, obtain consent and offer a chaperone before examination; expose only the necessary area and never retract a child's foreskin forcibly.

Describe glans, coronal sulcus, meatus, foreskin and adjacent groin rather than recording redness alone. Activity may be pink, red, violaceous, brown-red, pale, glazed, scaly, eroded or purpuric across skin tones. Look for phimosis, scar ring, fissures, discharge, odour, vesicles, ulcer, induration and lymph nodes, then examine mouth, nails, scalp, natal cleft and other skin if psoriasis, lichen planus or lichen sclerosus is possible. Return the foreskin to its normal position after examination to prevent iatrogenic paraphimosis.

Management should match a working diagnosis and include a planned review. Nonspecific inflammation often responds to stopping irritants, lukewarm-water washing, gentle drying and bland emollient. Candida is less common than repeated empirical labels suggest. A swab can identify yeast or bacteria but may show colonisation; persistent focal disease needs dermoscopy or biopsy. Recurrent inflammation, urinary symptoms or scarring requires urology or dermatology coordination, while suspected STI merits exposure-site testing and partner support. Circumcision can be therapeutic in recurrent disease, pathological phimosis, lichen sclerosus or Zoon balanitis after informed discussion, but it is not the automatic first response to one mild episode.

Key points

Balanitis is glans inflammation; balanoposthitis includes the foreskin. It describes a site, not an organism, so history and morphology must guide treatment.
Irritant disease is common after soap, overwashing, urine trapping, friction, incontinence or a new product and often improves with water-only care and emollient barrier.
Candida produces soreness with patchy erythema, small papules, subpreputial discharge or satellites, but recurrent disease should prompt review for diabetes, immune factors and alternative diagnoses.
Psoriasis is sharply demarcated and glazed with reduced scale on moist genital skin; nail, scalp, natal-cleft and extensor signs may reveal the diagnosis.
Lichen sclerosus causes pallor, fissures and a tightening scar ring and can produce pathological phimosis, urinary spraying and urethral disease.
Zoon balanitis creates a persistent shiny orange-red or red-brown patch in an older uncircumcised adult and requires exclusion of carcinoma and other mimics.
In children, a non-retractile foreskin is usually physiological and must not be forcibly retracted; inflammation, scarring, retention and recurrent infection change the pathway.
Offer a private inclusive sexual and medicine history, consent and a chaperone; examination or STI testing is based on symptoms and exposure, not identity or relationship status.
First-line irritant treatment is avoidance, gentle drying and bland emollient; use hydrocortisone 1% briefly for significant sterile inflammation or clotrimazole 1% for clinically likely Candida.
Biopsy a persistent indurated, velvety, eroded, ulcerated or bleeding lesion and review non-response rather than cycling through steroid, antifungal and antibiotic combinations.

02AetiologyUnderlying causes, associations and risk factors, with why each one matters.

Irritant barrier injury

Soap, detergent, urine, incontinence, sweat, friction and overwashing disrupt thin genital epithelium and commonly produce nonspecific inflammation.

Microbial overgrowth

Candida, streptococci, staphylococci and anaerobes exploit retained moisture, diabetes, recent antibiotic exposure, phimosis or impaired systemic immunity.

Inflammatory dermatosis

Psoriasis, eczema, lichen planus, lichen sclerosus, Zoon disease and fixed-drug reactions can preferentially affect genital skin.

Neoplastic change

Oncogenic HPV, chronic inflammation, tobacco exposure, immune suppression and age contribute to penile intraepithelial or invasive squamous neoplasia.

03PathophysiologyThe causal sequence from the underlying abnormality to symptoms and harm.

1
Occlusion and maceration
The preputial space retains moisture and secretions, softening barrier and increasing penetration of irritants, organisms and topical medicines.
2
Innate inflammatory response
Barrier injury and microbial antigens recruit inflammatory cells, causing soreness, oedema, erythema or colour change and exudation.
3
Scar-ring formation
Repeated inflammation or lichen sclerosus replaces elastic preputial tissue with fibrosis, creating pathological phimosis and sometimes meatal or urethral narrowing.
4
Paraphimosis ischaemia
A tight retracted foreskin obstructs venous and lymphatic return, increasing oedema until arterial inflow and glans viability are threatened.
5
Epithelial dysplasia
Persistent oncogenic and inflammatory injury can produce clonal atypical keratinocytes that progress from intraepithelial disease to invasive carcinoma.

04Clinical features and red flagsSymptoms, examination findings, patterns of presentation and time-critical warnings.

Irritant balanitis

Diffuse soreness and glazed erythema follow soap, urine, friction, incontinence or overwashing and lack a persistent indurated focal border.

Candidal pattern

Patchy erythema, small peripheral papules, soreness, discharge and recent antibiotics or diabetes support yeast, though culture must be interpreted against colonisation.

Genital psoriasis

A symmetrical sharply demarcated smooth red, violaceous or brown-red plaque has little scale, with scalp, nail, extensor or natal-cleft disease providing clues.

Male genital lichen sclerosus

Porcelain-pale or subtly hypopigmented sclerotic skin, fissures and a fibrotic preputial ring cause painful erection, phimosis, spraying or meatal narrowing.

Zoon balanitis

A well-defined shiny orange-red or cayenne-speckled glans or preputial patch in an older uncircumcised person can closely resemble inflammatory or in-situ malignant disease.

HSV or syphilis signal

Painful grouped vesicles or erosions suggest herpes, while a classically painless indurated ulcer suggests primary syphilis, but appearance alone is insufficient and both require laboratory testing.

Neoplastic focusRed flag

Persistent velvety red, pigmented, keratotic, eroded, ulcerated, indurated or bleeding tissue, especially with a node, requires urgent biopsy.

Red flags requiring action

Urinary retention, paraphimosis, dusky or necrotic tissue, severe pain out of proportion, systemic illness, rapidly spreading cellulitis, persistent induration, ulceration or bleeding, a fixed phimosis with scarring, or enlarged groin nodes requires urgent urological, surgical or cancer-pathway assessment.

05InvestigationsWhat to request, why it matters and how to interpret it.

Investigation order

Read from the initial assessment onwards. Tests may run in parallel in urgent care; first-line, preferred, confirmatory, definitive and gold-standard labels appear only when the chapter explicitly states them.

01
Consent-led genital and full-skin examinationFirst step
Why
Define morphology and find foreskin, urethral, nodal or systemic clues.
Interpretation and limitations
Record retractability without force, scar and lesion position, meatus, discharge and nodes and inspect nails, scalp, mouth and folds where an inflammatory dermatosis is suspected.
02
Fungal or bacterial swab
Why
Clarify clinically suspected Candida or bacterial infection when severe, recurrent or non-responsive.
Interpretation and limitations
Sample discharge, erosion or exudate before antimicrobial treatment when feasible; positive yeast can be secondary colonisation, so retain the morphological differential.
03
HSV PCR and STI testing
Why
Diagnose herpes and other sexually transmitted infection when ulcers, vesicles, urethritis or relevant exposure is present.
Interpretation and limitations
Swab a fresh lesion base and select syphilis, HIV and exposure-site gonorrhoea and chlamydia tests with consent; a negative late crust sample does not exclude HSV.
04
Glucose or HbA1c
Why
Identify diabetes contributing to severe, recurrent or candidal balanitis.
Interpretation and limitations
Test when recurrence, Candida, thirst, polyuria, obesity or infection pattern supports it; an elevated result requires a diabetes pathway rather than antifungal alone.
05
Skin biopsy
Why
Differentiate Zoon balanitis, psoriasis, lichen planus, fixed-drug eruption, penile intraepithelial neoplasia and invasive cancer.
Interpretation and limitations
Biopsy representative persistent indurated, keratotic, velvety, eroded or ulcerated tissue with dermatology or urology input; tell pathology the precise site and treatments.
06
Urinary and foreskin assessment
Why
Quantify pathological phimosis, meatal stenosis and obstruction.
Interpretation and limitations
Observe stream when appropriate and document spraying, ballooning, retention, recurrent infection and scar; physiological non-retractability without symptoms needs no forced manipulation or routine imaging.

06Differential diagnosisRealistic alternatives and the features that help distinguish them.

Candidal balanoposthitis

Patchy soreness, papules and discharge with diabetes or antibiotic exposure support Candida but do not exclude secondary colonisation.

Psoriasis or eczema

Glazed demarcated plaques and extra-genital psoriasis contrast with diffuse exposure-linked eczematous inflammation, although both disorders may coexist.

Lichen sclerosus or lichen planus

Pale scar and phimosis favour lichen sclerosus, while purple papules, erosions and oral lacy change favour lichen planus.

Sexually transmitted infection

Vesicle, ulcer, urethral discharge or exposure history requires HSV, syphilis, gonorrhoea and chlamydia testing selected by site.

Zoon disease or neoplasia

A persistent shiny focal plaque can represent benign plasma-cell inflammation, intraepithelial neoplasia or carcinoma and commonly needs biopsy.

07ManagementImmediate care, first-line treatment, alternatives and escalation.

01First-line irritant careRemove exposure and restore barrierFirst stepFirst lineDiffuse mild inflammation follows soap, urine, friction or overwashing without ulcer, discharge, scar or systemic illness.

1Stop soap, wipes, fragrance and suspected lubricants, wash once daily with lukewarm water or bland emollient substitute and dry gently.
2Keep the foreskin in its natural position and use a small amount of bland emollient barrier; never force retraction in a child.
3For marked sterile inflammation use prescribed hydrocortisone 1% thinly once or twice daily for no more than seven days and review response.

02First-line Candida careTreat likely yeast and its driverFirst linePatchy soreness, discharge and peripheral papules support Candida, particularly after antibiotics or with diabetes.

1Apply clotrimazole 1% cream thinly twice daily for 7–14 days, continuing gentle drying and avoiding irritants.
2Test or manage diabetes and review immune, antibiotic and partner symptoms when disease is severe or recurrent; partner treatment is based on symptoms rather than automatic.
3Re-examine if there is no clear improvement within one week and reconsider psoriasis, contact allergy, lichen sclerosus, Zoon disease, STI and neoplasia.

03Scarring dermatosis routeProtect foreskin and urinary functionPallor, a scar ring, fissures, pathological phimosis, spraying or meatal change suggests lichen sclerosus.

1Refer to a clinician experienced in male genital lichen sclerosus for an ultrapotent topical-corticosteroid plan and assessment of urethral involvement.
2Monitor stream, pain, retractability and suspicious focal change and involve urology when scarring obstructs function or circumcision is being considered.
3Send circumcision tissue for histology when clinically indicated and continue surveillance because residual glans or urethral disease may remain.

04Persistent-lesion routeStop empirical cycling and obtain tissueA focal lesion persists, bleeds, ulcerates, indurates or fails one correctly delivered diagnosis-specific course.

1Photograph only with specific consent, map the lesion and arrange urgent dermatology or urology assessment when cancer is possible.
2Perform representative biopsy and appropriate nodal examination rather than applying repeated steroid–antifungal–antibiotic combinations.
3Reconcile histology with morphology and repeat sampling or specialist pathology review when the lesion remains clinically concerning.

Key medicines and prescribing safety3 treatments · regimens, roles and cautions

Short-course mild topical corticosteroid reduces inflammation while the irritant and barrier problem is corrected.

Hydrocortisone 1% cream or ointment

Apply a very thin layer once or twice daily to a mapped area of significant sterile irritant or eczematous inflammation for up to 7 days, then stop and reassess; use an ointment when preservative sensitivity or dryness favours it.

Do not apply blindly to an undiagnosed ulcer, untreated HSV or a persistent focal lesion, and avoid prolonged unsupervised genital use. In children use only the age-appropriate prescribed product and never beneath forced foreskin occlusion.

First-line topical imidazole for uncomplicated candidal balanoposthitis alongside drying and correction of diabetes or antibiotic drivers.

Clotrimazole 1% cream

Apply thinly to clinically candidal glans and preputial skin twice daily for 7–14 days, following current product information and reviewing at one week if response is poor.

Local burning or allergy can mimic worsening disease; cream can impair latex contraceptive effectiveness depending on formulation, so check the product information. Recurrent positive Candida does not exclude lichen sclerosus, psoriasis or diabetes.

Ultrapotent anti-inflammatory treatment can control active lichen sclerosus and may improve early phimosis while urological function is assessed.

Clobetasol propionate 0.05% for male genital lichen sclerosus

Use a specialist-directed thin application to affected preputial and glans skin at the prescribed frequency, commonly once daily for a defined induction period, with early review of symptoms, scar and quantity used.

Diagnosis and treatment site must be clear; exclude focal cancer and infection, avoid indefinite unreviewed use and refer obstruction, meatal disease or non-response to urology or specialist dermatology.

08ComplicationsImportant consequences, why they occur and why they matter clinically.

Paraphimosis and obstruction

Swelling behind a tight foreskin threatens glans perfusion, while scar or meatal disease can impair urinary flow and cause retention.

Ascending or invasive infection

Barrier failure can permit cellulitis, abscess or urinary infection and, rarely, rapidly destructive necrotising soft-tissue infection.

Pathological phimosis

Repeated fissuring and sclerosis can prevent retraction, impair hygiene, cause painful erection and require urological or surgical treatment.

Penile malignancy

Delayed biopsy of persistent focal disease permits intraepithelial neoplasia to progress or invasive cancer to present at a later stage.

Sexual and psychological harm

Pain, odour, altered appearance, repeated recurrence and insensitive examination can impair intimacy, self-image and willingness to seek care.

09Monitoring and follow-upTreatment response, safety checks and longer-term review.

Review a first episode after the defined course to confirm resolution and revise the diagnosis if soreness, discharge or focal change persists.
Ask specifically about urinary flow, spraying, retention, painful erection and ability to return a retracted foreskin; these functional outcomes may progress despite less redness.
For recurrence, inspect products and technique and test for diabetes or immunosuppression when clinically supported rather than supplying indefinite antifungal repeats.
Track lichen sclerosus scar, meatus and focal lesions with a diagram and specialist plan and confirm histology from circumcision or biopsy reaches the responsible clinician.
Offer appropriate STI results, partner notification, vaccination and prevention follow-up when sexual exposure testing was undertaken, maintaining confidentiality.
Give urgent return advice for a foreskin stuck retracted, inability to urinate, dusky glans, severe spreading pain, fever, ulcer, bleeding or new groin lump.

10Special situationsVariants, exceptions and circumstances that change the usual approach.

Balanitis names inflammation

The word does not distinguish Candida from irritant, psoriasis, lichen sclerosus or cancer, so empirical antifungal repetition is not a diagnosis.

A child's foreskin matures gradually

Non-retractability is commonly physiological, and forced separation causes fissure, scar, pain and an avoidable pathway to pathological phimosis.

Return what you retract

A foreskin left behind the glans after examination can swell into iatrogenic paraphimosis and threaten perfusion.

Moist skin hides scale

Genital psoriasis is often glazed rather than scaly, making nail, scalp and natal-cleft examination diagnostically valuable.

Candida may be a passenger

Yeast can colonise inflamed skin; clinical pattern, drivers and response determine whether it is the primary problem.

Persistent beats presumed benign

Zoon balanitis and inflammatory plaques can resemble penile intraepithelial neoplasia, so lasting focal disease often requires histology.

11Common pitfallsFrequent interpretation and management errors.

01
Forcibly retracting a physiologically non-retractile foreskin in a child.
02
Failing to return a retracted foreskin after examination and causing paraphimosis.
03
Assuming Candida from genital redness and issuing repeated combination cream without review.
04
Missing diabetes in recurrent candidal inflammation or missing psoriasis and lichen sclerosus when cultures show colonising yeast.
05
Taking an STI history in front of a partner or caregiver without offering confidential time.
06
Treating a persistent velvety, indurated, bleeding or ulcerated focus empirically instead of arranging biopsy.
07
Using potent topical corticosteroid on undiagnosed genital disease indefinitely without site, duration and follow-up.