Steroids particularly should not be given without supervision as they give different ones for different uses, and if given long term can cause other problems. They should also be reduced gradually if given over a longer period, as the dogs tend to get reliant on them.
Now I am going to say something which really goes against the grain and which I would not normally suggest!!!
try using a harness (ouch that hurt even saying it) - get one that does not go round the neck, you can get them that the dog steps into with its front feet and does up over the back.
This will keep any irritation away from his neck.
(Although I sell them to people who really want them I hate the bl**dy things!. ) They don't stop dogs pulling, which is why most people buy them. Lets face it you put a harness on a husky so it CAN pull a sled. If the dog keeps pulling then the owners lift the dog up in the middle of the back, which causes untold problems with their backs. Sorry I digress.
Try trimming the hair a bit where it has become sore so it is not rubbing. The vet may give you something to bathe it with, such as Hibiscrub, as powders tend to make it dry out too quick.
Have you tried changing his food if he is prone to skin problems? You could try Burns, or James Wellbeloved.
Another good one for this type of problem is Nutro. Ask at your pet shop and they will be able to get it in if they don't stock it.