Have your vitamin D levels checked. I've been suffering with excruciating back pain for more than 15 years. For the past 3 years, my ENTIRE muscularskeletal system has been the source of much pain. It's felt like every bone, every muscle, every joint in my body (hands, fingers, arms, neck, shoulders, spine, hips, thighs, legs, feet, toes) HURTS. I've refused to take prescription pain pills because doctors/specialists couldn't give me any answers (no diagnosis), but they were more than willing to write prescriptions for controlled substances, which over the years, could have led to an addiction to pain pills. In addition to the pain, I've had lightheadedness, EXTREME FATIGUE, and have just been barely functioning. Well, I finally found a doctor who listened intentively to my symptoms, and instead of giving me a prescription, suggesting that my life was too stressful (hell, whose life isn't), or looking at me like I was crazy or a hypochondriac, ran tests. I was tested or lupus, fibromyalgia, and vitamin D deficiency. Before the results came back, I'd researched each condition & diagnosed myself with vitamin D deficiency based on my symptoms. Sure enough, the results came back 2 days later, and I have a vitamin D deficiency. I just took my first prescribed vitamin D supplement yesterday, and I look forward to responding in weeks to come as I hopefully start to feel better. Heck, I just want my life back!!!