Hello, my mother age 45, suffers from frequent acidity and headaches. She also goes through tremendous pain in her heels, so much that she cannot even stand. She has been under some painkillers and acidity medicines, but that is not helping. Since few days, she is also suffering from pain in the back of her knees. Back pain and headaches are very common when she goes through acid reflux. Please suggest which doctor/consultation should we look for.