What counts as tax deductible medical expenses?

I am registered as a sole proprietory with a DBA. I work part-time as a deli trainer/kitchen staff associate and then also as a freelance music producer. Handling both jobs put a toll on my body physically. I started getting massages and also am now going to a chiropractor periodically to realign my body, and I'm wondering if I can write off that expense as a business expense? If not, how can I claim it on my taxes?