We plan to develop a disease-specific instrument to assess HRQoL in children with constipation and fecal incontinence. We hypothesize that HRQoL is worse in children with fecal incontinence compared to children with constipation but no fecal incontinence. The instrument will involve both parent and child self-reporting measures and will enable researchers to evaluate how disease and treatment strategies impact both child and parent perceptions of quality of life. In the long run this will enable physicians to develop a child friendly approach to management of chronic constipation and fecal incontinence.