To compare the presence and severity of striae gravidarum in pregnant women with and without stress urinary incontinence and to evaluate whether there is a relationship between the severity of striae gravidarum and the severity of incontinence in pregnant women with stress urinary incontinence.

Healthy primigravid pregnant women with an uneventful singleton pregnancy at 36–37 weeks of gestation were included. All women were asked two questions to assess the presence of urinary incontinence. Women who answered 'yes' to the question 'Do you have any involuntary urinary leakage during coughing/laughing/sneezing/running/jumping?' and 'no' to the question 'Do you have any involuntary urinary leakage accompanied by a strong urge to void?' were classified as women with stress urinary incontinence, and women who answered 'no' to both questions were classified as women without stress urinary incontinence. The presence and severity of striae gravidarum of these two groups were evaluated with the Davey score, and the severity of incontinence of women with stress urinary incontinence was evaluated with the Incontinence severity index questionnaire.

The Davey score of pregnant women with stress urinary incontinence was significantly higher than the score of women without stress urinary incontinence and the presence of severe striae gravidarum was more common in women with stress urinary incontinence. There was a positive, significant correlation between Incontinence severity index and Davey scores in women with stress urinary incontinence, and this was the only independent correlation that was significant in linear regression analysis.

Presence and severity of striae gravidarum is correlated with the presence and severity of stress urinary incontinence in primigravid pregnant women. Evaluation of striae gravidarum may be useful in predicting the development of stress urinary incontinence and taking necessary precautions against it. This issue should be evaluated with good quality studies.