Myxofibrosarcoma is a rare type of soft tissue sarcoma that develops from connective tissues, most commonly affecting the arms and legs. It usually occurs in older adults and is characterized by slow-growing tumors that may appear painless in the early stages. Although myxofibrosarcoma often grows slowly, it has a tendency to recur locally after treatment and, in some cases, spread …

Nearsightedness, also known as myopia, is a common vision condition in which close objects are seen clearly, while distant objects appear blurred. It occurs when light entering the eye focuses in front of the retina instead of directly on it. Nearsightedness often begins in childhood or adolescence and may worsen as the eyes continue to grow. The condition can usually …

Myofascial pain syndrome is a chronic pain condition that affects the muscles and the connective tissue surrounding them, known as fascia. It is characterized by localized areas of muscle tightness called trigger points, which can cause pain both at the site and in other parts of the body. This condition often develops due to muscle overuse, repetitive movements, or prolonged …

Myoclonus is a neurological condition characterized by sudden, brief, involuntary muscle jerks. These movements can involve a single muscle, a group of muscles, or multiple areas of the body. Myoclonus can occur as a normal phenomenon, such as hiccups or sleep-related jerks, or as a symptom of an underlying medical or neurological disorder. The severity of myoclonus varies widely. Some …

Myocarditis is an inflammatory condition affecting the heart muscle. The inflammation can weaken the heart and interfere with its ability to pump blood effectively. Myocarditis may be mild and resolve on its own, or it can be severe and lead to serious heart complications. The condition can affect people of all ages and is often triggered by infections, immune responses, …

Muscle strains occur when muscle fibers are overstretched or torn due to excessive force or sudden movement. They are commonly referred to as pulled muscles and can affect any muscle in the body, especially those involved in physical activity such as the back, hamstrings, shoulders, and calves. Muscle strains range from mild to severe. Mild strains may cause discomfort with …

Mumps is a contagious viral infection that primarily affects the salivary glands, especially the parotid glands located near the ears. The infection leads to painful swelling of these glands and can cause fever and general discomfort. Mumps is caused by a virus and spreads easily through close contact. The condition was once common in childhood but has become less frequent …

Multiple system atrophy is a rare, progressive neurological disorder that affects movement, balance, and the autonomic nervous system, which controls involuntary body functions such as blood pressure, breathing, and digestion. It is characterized by the gradual degeneration of nerve cells in specific areas of the brain. The condition typically begins in adulthood and worsens over time. Multiple system atrophy can …

Multiple sclerosis is a chronic autoimmune disease that affects the central nervous system, including the brain and spinal cord. In this condition, the immune system mistakenly attacks the protective covering of nerve fibers, known as myelin. This damage disrupts communication between the brain and the rest of the body. Multiple sclerosis can follow different patterns, with symptoms that may come …

Moyamoya disease is a rare, progressive cerebrovascular disorder in which certain arteries at the base of the brain become narrowed or blocked. To compensate for reduced blood flow, the brain develops a network of tiny blood vessels that appear hazy on imaging, resembling a puff of smoke. This abnormal circulation is fragile and prone to bleeding or blockage. The condition …