How do I handle a long gap on my résumé? (Boston)

My résumé shows a gap from a layoff and some health issues. I do not usually post, so bear with me. I am not sure how much to explain. Did anyone get past it?

I was hired after a 13-month gap. The manager said the skills test mattered more than the dates.

Thanks for writing this out. I went through something close to it 13 months ago, and it settled down once I kept a simple log of every call and form.