A charity is to open the region's first centre to support women with endometriosis.
The condition causes tissue, similar to the lining of the uterus, to grow elsewhere in the body, including the ovaries, pelvis, bladder and bowel.
It can cause extreme pain, fatigue, heavy periods and can make it difficult to get pregnant.
Helen Brewster, co-founder of Hull and East Yorkshire Endo, said getting a diagnosis can take years.