### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Hi, I am a 38 year old woman. Two years ago, I lost 100 lb with diet and exercise. About two years ago, I started having back pain (lower right side). About 1 year after that, my right shoulders starting hurting while using exercise equipment. In March (while on the treadmill), my toes on my right foot start to cramp under like spasms. From that point on after walking about 30 minutes I experience the cramping. Later(over the past 3 months), I ve had a tightness in my right thigh (which actually started slightly prior to the cramping) but is now accompanied by knee pain and throbbing . My right arm continues to hurt and for the last two months I ve had a twitch in my wrist. My pinkie finger shakes when I use it for support. I ve been to several doctors. The only thing I ve been told is that I am anemic (iron deficiency) but they are not sure about the source of my symptoms. I also have a sore tooth (molar)on the right side of my mouth. What could be causing my symptom?

### output:

Dear Madam, it is good to know that you have lost 100 lb with diet and exercise. Your back pain, toe cramp and tightness in the thigh all have source in your nerve coming out of spinal cord in sacrum area. We have a soft tissue like substance in between our vertebra. These are called vertebral discs. If these discs gets torn or displaced due to many reasons then the nerves get entrapped between vertebral bones.it causes pain, muscle cramps, numbness along back and two legs. Also you should give rest to your right arm which has been injured. Your wrist twice has caused the local nerves affected causing finger shake., so please go for a comprehensive orthopedic check-up to know the exact status of your wrist joint. But I assure you that your sore tooth has nothing in relation with your muscle cramp of leg pain. Thank you.