How do I handle a long gap on my résumé?, IT help-desk technician here

My résumé shows a gap from a layoff and some health issues. It has been weighing on me all week. I have done some volunteering and a course during that time. What do you say in interviews?

I listed the volunteering and course under the same dates and kept the explanation to a sentence in the cover letter.

Keep your skills fresh and mention anything recent. It shows momentum.