Feldspar is a rock-forming mineral. It is important industrially in making glass, ceramics, enamelware and soaps. It is also used in making bonding material for abrasive wheels, cements, fertilizer, tarred roofing materials and as a sizing or filler in textiles and paper.
Depending upon the cause, muscle pain can be mild or severe and debilitating. Muscle pain is the hallmark symptom of some chronic conditions like fibromyalgia. Related symptoms that can occur with muscle pain are tenderness, swelling, redness, or fever. Medically Reviewed by a Doctor on 3/2/2017.
WebMD Symptom Checker helps you find the most common medical conditions indicated by the symptoms muscle cramps or spasms (painful) (abdomen (upper)), muscle cramps or spasms (painful) (leg), muscle wasting and pain or discomfort including Low potassium (hypokalemia), Muscle strain, and Restless legs syndrome.