Megan Hall blames her aching back on the back bend she did five years ago at an exuberant hot-yoga class. Since then, the Santa Rosa dental hygienist has tried everything from deep massage to cortisone injections to mail-order back contraptions to ease the chronic pain in her lower back.
When she feels it coming on, she does floor stretches and then ices her lower back.
The worst is when she's been standing most of the day at work and then keeps standing, while grocery shopping or cooking dinner.
"If I don't get down on the ground," she said, "I can't handle it."
Hall, 53, is in good, albeit miserable, company. Eighty percent of Americans suffer back pain that doesn't come from a broken bone or an illness but is at some point strong enough to make them call a doctor.
And here are some painful truths about this common malady: Lower back pain is largely inevitable and there is no real cure.
"Back pain is a part of life. It's part of aging," said Dr. Kirk Pappas, a sports medicine doctor at Kaiser Permanente in Santa Rosa.
"The spine ages," he said. "The joints settle. It's like that old cushion on your couch that gets flattened out."
Low back pain is a chronic recurring condition, said Pappas, "and that's the part that humans don't like. They want you to fix it. I want to fix it, too. Your doctor, your massage therapist, your hot-stone healer, your whatever, they want to fix you, too.
"Some patients will see 17 different people for their back and will get relief," he added.
"And then they'll say it was acupuncture or it was Advil that helped my back pain. But it is a rare exception to have a miraculous fix."
One reason is that it's difficult to pinpoint the actual pain generator.
"It could be coming from the joints, ligaments, muscles, discs," Pappas said.
So, what to do when your back acts up? Stay active, for one thing.
Avoid prolonged bed rest, which is what doctors used to commonly order for back pain before they recognized that staying in bed can lead to the deterioration of muscles and body functions.
"Each day in bed you lose conditioning of the muscle and it takes two days to recover," Pappas said.
As for whether it's best to apply cold or heat or take one pain pill over another, it's pretty much an individual choice.
"A patient's own beliefs are more powerful than my words," Pappas said. "For me to say I know you like ice, but I prefer heat will not make heat work for him."
The same is true with pain medication.
"In terms of simple, over-the-counter medication for pain relief," said Pappas, "there is no good literature that says one is better than the other."
Physical therapist Sharon Barbee helps run a weekly back clinic at Kaiser in Santa Rosa where patients with chronic back problems learn how to sit, stretch, improve posture, work on good abdominal tone and discuss more back-friendly ways to sleep or pick up a toddler.
"The majority of people with back pain have the kind that comes and goes," said Barbee.