Hi my 3 year old has suffered with constipication for over a year, and now I have noticed a small pea sized lump inside one of his bum cheeks near his anus , he is complaining it huts and is scratching his bottom, he is on movacol medication still once a day to soften his stools and had been quite regular for the past 4 months however I am concerned he may have piles or a cyst , this is not the first time i have felt a lump here during the past year, I am wondering if this lump is causing him some discomfort when passing his stools which psychologicaly affected him which is why he still tries to stop himself from passing stools by crossing his legs what do you advise?