The primary issue with large labia is typically psychological, with large labia the cause of embarrassment and even significant psychological distress.
It is also true that large labia can cause some functional issues as well. Excessively large labia can chafe on clothing, and cause discomfort wearing some clothes and swimming costumes. Large labia can also impact the enjoyment and comfort of sexual intercourse and exercise.
Oversized or irregularly shaped labia are common. Although there is no accepted definition of what is normal when it comes to the vulva, and labia truly come in all shapes & sizes, however they may be enlarged or significantly asymmetrical.