I'm doing some research on drop attacks, specifically for those causes mentioned on http://american-hearing.org/disorders/drop-attacks/
I would like to get an idea of the frequency for drop attacks for each of the known causes mentioned in that article. Some suggestions for possible responses could be:
- X times in a lifetime
- X times per year (or month or week, etc.)
- 100% unpredictable
- More frequent in older/younger/gender/etc people (how frequent in each?)
- No information available
If possible, provide a reference to where you get your information. Here are the causes listed on the page I linked to:
1) Cause never established
2) Due to the heart (a variant of syncope)
3) Poor circulation to the brain
4) Problems with both the heart and the brain
5) Seizures
6) Due to the inner ear
7) Psychological problems