Muscle aches and pains are common symptoms of multiple health conditions. Aches may also be caused by several regular activities, such as walking, standing, and exercising excessively or for long durations. Most individuals suffer from muscle aches and pains at some point in their lives, so it is important to know why they happen. In this article, we explore five health conditions that may cause muscle pain   and weakness in the body. Five health conditions that lead to muscle pain Multiple sclerosis Multiple sclerosis (MS) is an autoimmune condition. It is a disease of the nervous system that causes nerve damage. Multiple sclerosis leads to muscle weakness and numbness, tremors, painful electric shock-like sensations in the muscles, and fatigue. This health condition may affect someone’s speech and vision particularly. Other symptoms may include weakness, exhaustion, blurry vision, lack of balance, trouble with walking, memory problems, and permanent or temporary blindness, typically in one eye. Though there is not much evidence, including and avoiding certain foods and meals may help treat and manage MS. Anxiety and stress The immune system cannot control the response to inflammation during stress. Therefore, the body cannot fight illnesses or infections as usual. This may lead to increased muscle and body ache.