I think you should specify "symptoms". My most troubling are mental or psychological symptoms, as opposed to physical symptoms.
I try to treat all of my mental...my brain episodes... the same: deep breathing, listening to music I can relax to, as well as music I dance to, singing outloud, forcing myself to do physical work when my apathy has me stagnating and worrisome, and just plain sleeping. With a combo of these I can usually pull myself out of a deep depression, including being very suicidal, or an anxiety attack that has me screaming and yelling at someone (and temporarily HATING them). Fixing my BRAIN is fixing a part of my body. Yes, I can do things to fix my brain. And with a lot of puching myself, I can break a period of apathy.