Hi I Was Wondering If My Daughter Could Have Hershbergers

Hi I was wondering if my daughter could have hershbergers disease she's 6 years old and has had constipation since she was a baby? She has an appointment to go see if she does have it so I was wondering since she's 6 years old if she has hershbergers disease would it be bad or what since she's had this problem for 6 years now?