anogenital skin (sacrum, buttocks, pubic mound and penis) is a common, and sometimes the only, site of psoriasis
usually psoriasis is not itchy
diagnosis is usually clinical
biopsy is occasionally required for solitary mucosal lesions in uncircumcised patients when Zoon‘s balanitis, Bowen’s disease and extramammary Paget’s disease cannot be excluded
Treatment
options for treatment include topical corticosteroids, weak tar preparations and topical vitamin D analogues
systemic treatment (methotrexate or ciclosporin) may occasionally be indicated for treatment of severe anogenital psoriasis
Reference:
Bunker C B. Male genital dermatology. London: Saunders, 2004.
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