Movement disorders are a group of neurological conditions that affect the speed, fluency, quality, or ease of voluntary and involuntary movements. These disorders may cause excessive movements, reduced movements, or abnormal movements that interfere with daily activities and quality of life. Movement disorders can affect people of all ages and may develop gradually or appear suddenly, depending on the underlying …

Mosquito bites are common skin reactions that occur when a mosquito pierces the skin to feed on blood. During the bite, the mosquito injects saliva that triggers an immune response, leading to itching, redness, and swelling. Most mosquito bites are harmless and heal on their own within a few days. In some cases, mosquito bites can transmit infections or cause …

Morton’s neuroma is a painful foot condition caused by thickening of the tissue surrounding one of the nerves leading to the toes. It most commonly affects the nerve between the third and fourth toes. The condition is not a true tumor but rather a nerve irritation that develops over time. Morton’s neuroma often causes discomfort while walking or standing and …

Morning sickness is a common pregnancy-related condition characterized by nausea and, in some cases, vomiting. It most often occurs during the first trimester but can happen at any time of the day, not just in the morning. The severity varies widely, ranging from mild nausea to frequent vomiting that interferes with daily activities. Morning sickness is generally considered a normal …

Mood disorders are a group of mental health conditions characterized by persistent disturbances in a person’s emotional state. These disturbances affect how an individual feels, thinks, and functions in daily life. Mood disorders may involve periods of unusually low mood, elevated mood, or fluctuations between both. These conditions can significantly impact relationships, work performance, physical health, and overall quality of …

Molluscum contagiosum is a common viral skin infection that causes small, raised, painless bumps on the skin. It is caused by a poxvirus and spreads easily through direct skin-to-skin contact or by touching contaminated objects. The condition is generally harmless and often resolves on its own over time. Molluscum contagiosum is most common in children, but it can also affect …

Moles are common skin growths that develop when pigment-producing cells called melanocytes grow in clusters. They usually appear as small, dark brown spots but can vary in color, size, and shape. Most moles are harmless and develop during childhood or early adulthood. Moles can appear anywhere on the skin and may change slowly over time. While the majority are benign, …

Molar pregnancy is a rare complication of pregnancy that occurs when abnormal tissue grows inside the uterus instead of a normal embryo. It is a type of gestational trophoblastic disease and results from an error during fertilization that leads to abnormal development of placental tissue. There are two main types of molar pregnancy: complete and partial. In a complete molar …

Myelin oligodendrocyte glycoprotein antibody-associated disease is an autoimmune inflammatory disorder of the central nervous system. It occurs when the immune system produces antibodies against myelin oligodendrocyte glycoprotein, a protein found on the surface of myelin, the protective covering of nerve fibers in the brain, spinal cord, and optic nerves. MOGAD can affect both children and adults and may present as …

Mixed connective tissue disease is a rare autoimmune disorder characterized by features of several connective tissue diseases occurring together in the same individual. It commonly shows overlapping signs of conditions such as lupus, scleroderma, and polymyositis. The immune system mistakenly attacks the body’s own connective tissues, leading to inflammation and damage in multiple organs. Mixed connective tissue disease often develops …