I also have lower back pain. I don't know what is wrong with me and my doctor can't find anything wrong. I am 27yrs old, and have had these problems for about 2 years. Thank you Troy Dear Troy, Chronic diarrhea, especially with large volume, frequent, watery stools, can lead to fluid, electrolyte and mineral deficiency. These can cause fatigue and muscle aches and cramping.
Zinc deficiency can also occur.
Since you have had these symptoms for the past 2 years, I would recommend that you have a gastroenterological evaluation to rule out a number of gastrointestinal disorders such as inflammatory bowel disease or celiac sprue. I hope you find this information helpful. This response is being provided for general informational purposes only and should not be considered medical advice or consultation. Always check with your personal physician when you have a question pertaining to your health. Information contained within this forum is intended solely for general educational purposes and is not intended nor implied to be a substitute for professional medical advice relative to your specific medical condition or question.