Is it necessary to change the packing of a wound left by the draining of a perianal abscess everyday, since its so painful? My wound is 1.5 inches deep.

Yes! The point of draing and packing space and then removing the packing and repacking is to prevent an &&andinfection from setting in there. It is not the cleanest part of your body and it will take a while to fully heal. The incision and drainage (I & D) is more important to your cure than whatever antibiotics that you may be taking. As the packing is removed a probe should be inserted & moved aroun.