How do I handle a long gap on my résumé? - any advice?

My résumé shows a gap from a layoff and some health issues. I am in Fresno, in case local advice matters. I have done some volunteering and a course during that time. What do you say in interviews?

Thanks for writing this out. I went through something close to it 5 months ago, and it got easier once I kept a simple log of every call and form.