It sounds like your mother is facing multiple health challenges that need careful attention. Symptoms such as persistent throat discomfort and non-healing sores can arise from various causes, including infections, chronic inflammation, or even side effects from existing conditions like thyroid issues. It's essential to have a thorough evaluation from a endocrinologist, who can determine the underlying factors and recommend appropriate treatments. Encouraging hydration, a nutritious diet, and avoiding irritants can help, but professional guidance is crucial for effective management. Please consider scheduling an appointment to ensure she receives the best possible care.