muscular pain

My mom symptoms are as follows: 1. muscular pain that migrates to different parts of the body over time.this has been experienced for 15 years 2. pain occurs most frequently in hips AND back 3. blood tests show 'sedimentation rate' above normal. over time very little correlation between sedimentation rate AND subjective experience of pain. 4. Prednizone (10 mg) reduces pain but during a recent experience of severe pain, raising dosage to 30 mg had no effect AND reducing dosage back to 10 mg did not increase pain either. 5.general tiredness most of the time! Do you have any idea- how it may possible to relief her pain AND tiredness????