I have had lacerated hemms before, internal and external.
The external hemms were helped by an over the counter product, Dickinsons Oil. You will find it in the med section.
None of the oitments, suppositories or any of the drugs they game me helped, the Dickinsons is applied to small round cottony pads, not balls.
Then held against the area for about 2 mins, the first 30 secs you may want to scream as the oil kills the bacterial infectionous crap sruuounding your anus, but, for me at least, after a couple short weeks, it finaly healed over and dried up to the skin tag.
The internal ones I just try to keep under control with diet.
They thought I had a fisssure at one point and went in for the suregery, only to find no fissure, hence how I found the lacerated hemms.
Anyway, Im sure there is more advice then just mine out there, but the Dickinsons really helped the external pain, imediatley.
Thanks
Jon