Sorry for late reply. All ailments can be cured by Coue's technique. Coue's hardly had any failures out of tens of thousands of marvelous cures he performed.
His technique is based on 100% scientific principles. I urge to you to read his books
However it may be unlikely to get cured of problems when in advanced stage. But total improvement is guaranteed. But only when you understand his method.
There were a few people who would get cured simply be reading letter replies from Coue himself.
In short nothing can stop you from getting 100% cured if you understand and use his method. Don't forget to read "Self Mastery" by Emile Coue. Came back if you need further clarification.
But I'm no expert on Coueism.