###Human: What is causing muscle pain with frequent urination? ###Assistant: Hello. Since when she is suffering? How old is your mother-in-law? Any morning stiffness? Since when is she suffering from diabetes? The possibility of fibromyalgia or rheumatoid arthritis or chronic fatigue syndrome or infection or menopausal symptoms, etc. Please get it done FSH, LH levels. Get it done ESR, RA factor. Use tablet Paracetamol thrice a day if necessary. Drink plenty of water. Please review with reports. Take care.