Hello jebplume,
I have just prayed for you that if it is God’s will to cure the disease, then may He help you. If it is His other will that this is your cross, I prayed that you would be able to recognize that this is your cross and you will have the strength and the love for Him to carry it and to be happy that at the end you will be rewarded.
I am briefly sharing with you my illness which I have had for more than 20 years now that everyday I can only breathe through one nostril.
Please keep in mind, jebplume, that having your own cross does not mean God is punishing you. You can pray and ask Him what He wants you to do with it.