Two percent?

My frozen shoulder is getting worse. Now even while I am typiing in this entry, my shoulder and back began to ache.
I heard that 2 % of the general population are affected by this disorder. Is it so few? Many people I know including my parents and my wife suffered it. There is no obvious predisposition based on sex, arm dominance or occupation. That is to say you are just as prone to it whether you are a man or woman, right handed or left, or construction worker or a singer. Several years ago my right arm suffered and it took about half a year to get better. It healed on its own. So I hope this time also it will be gone while just waiting. I think I am lucky because if it had been like this before I finished my report, I would have needed someone for dictation.
The cause of the disorder is not clear. Medical science has advanced but we may be more ignorant than we think we are. There are some things that we cannot do anything about it but accept. Sometimes it is very good to wait and see while nature takes its course instead of resisting it and trying this, that and the other.