If you are diagnosed with hypersomnia, your doctor can prescribe various drugs to treat it, including stimulants, antidepressants, as well as several newer medications (for example, Provigil and Xyrem).
You may have your 2015 RMD made payable directly to the charity (provided it meets the IRS definition of a qualified charity), and then designate it as a qualified charitable distribution on your tax return. You'll have satisfied your distribution requirement, and you won't have to pay income taxes on that money.
The IRS has very specific rules about how much you must take out each year. This is called the required minimum distribution (RMD). If you fail to take out the required amount you could be socked with a 50% tax on the amount not distributed as required. You can avoid the RMD completely if you have a Roth IRA.