Allah made for every sickness a remedy. We must not accept that there any sickness without remedy. The Prophet Muhammad mentioned that for every sickness there is a cure
One day Molla Nasreddin was sprinkling some powder on the ground around his house.
-Molla, what are you doing? a neighbor asked.
-I want to keep the tigers away.
-But there are no tigers within hundreds of miles.
-Effective, isn't it? Molla replied