Hello XXXX My son 8 years old, had complained of discomfort around anus. He felt like he needed to pass bowel, but after straining a bit it didn t come. He is constipated. There was tiny swelling just on the lower end of his anus at that time and it was feeling extremely itchy and distracting. After another toilet visit 1h later stool didn t come, but the little swelling from the anus disappeared. Couple of hours later whilst having shower, I observed that area leading from his bottom towards scrotum sac is swollen. Skin is in normal condition no redness and he said he hasn t been injured there. He said it feels strange but not painful. What should be the cause?