BACKGROUND White vulva! skin lesions may be due to various conditions, including benign and non-benign causes. The dilemma faced by the clinician with such a patient is the aetiology of the lesion, as well as the approach to management. AIM To establish the aetiology of white vulva! skin lesions in patients attending the gynaecology clinic and to evaluate the role of Collin's test and vulvoscopy. SETTING R. K. Khan Hospital, which is a secondary level hospital in Durban, KwaZulu Natal. METHOD Sixty-two patients with white vulva! skin lesions whom consented to the study were recruited. The investigations consisted of Pap smear, colposcopy of the vulva [Vulvoscopy], perineum and where appropriate, vaginoscopy and colposcopy; Collin's test and biopsy of all abnormal areas detected by these tests. RESULTS Pruritus vulvae was the commonest presenting symptom [70%1. No vulvoscopic abnormalities were detected in 97% of patients, whilst 3% had acetowhite areas indicative of Human papilloma virus infection. Collin's test was positive in 40% of patients, although, histologically these areas were benign. All patients in the study had benign lesions on histology. CONCLUSION All patients in this study had benign causes of white vulval skin lesions. However, this cannot lead us to conclude that there is no role for doing Vulvoscopy and Collin's test, as premalignant and malignant lesions should be detected by these tests had they been present. / Thesis (M.Med.)-University of Natal, Durban, 1998.