Complex sentence: Vulvar vestibulitis is the most common subtype of vulvodynia affecting premenopausal women which causes dyspareunia, and it tends to be associated with a highly localized "burning" or "cutting" type of pain.
Split into simpler sentences: Vulvar vestibulitis is the most common subtype of vulvodynia affecting premenopausal women. It tends to be associated with a highly localized "burning" or "cutting" type of pain.