There is no real surgical procedure for removing Ichthyosis specifically. I know a few people here who have had some precedures like dermabrasion to remove layers of skin, but I don't know how well that worked.
I am considering having a tummy tuck, not so much to remove fat, but to remove the painful line of skin around my waist.
The doctor will simply cut that part out around my waist and pull the rest of my skin together to create a new, scale free waist. The fact that I come out of it thinner for the process is just a bonus. I know that the skin will come back, but it will take years for that to happen, and this time I will be prepared!
Most plastic surgeons will do a free consult, so make an appointment and show the doctor your trouble areas and see what they recommend. It certainly can't hurt!