### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Hi I am unable to make it to the hospital today and i am so nervous about this that I need at least some type of an answer now.  I noticed today while in the shower that I have a hard lump on the inside of my buttcheek.  Its not painful, however, when you touch it, it becomes sensitive.  I am sexually active and I am so hoping that it is not genitial herpes.  I was looking online and I saw something about when you have a change in bowel movements your blood vessels can pop or something like that.  I have been constipated for the past couple of days...

### output:

Welcome to Chat Doctor. 1. The history and anatomical location suggest the possible cause could be hair follicular infection with collection within, next possibility is sebaceous collection due to ductal blockage.2. Other possible cause since you have mentioned the constipation - if it's arising from the anus / anal region the possibilities of hemorrhoids can be thought of.3. In any way I would recommend to not squeeze or scratch the area as it will complicate, maintain local hygiene, clean area with antiseptic liquid and soft clothing which do no cause any rubbing effect on the lump.4.However it needs to be examined - if infective nature needs a course of antibiotics, in sebaceous nature needs monitoring, hemorrhoids needs finer diet, more of water will help (avoid junk and spice, fat foods).5.SO I would suggest get an appointment and get examined and treated accordingly. Good luck. Hope I have answered your query,anything to ask do not hesitate to ask.http://doctor.ChatDoctor .com/doctors/ Chat Doctor. 