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 have read a lot of threads here and could not find my exact situation. I have done some volunteering and a course during that time. How did you handle it on your résumé?

I was hired after a 6-month gap. The manager said the skills test mattered more than the dates.