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Definition Moyamoya disease is a disorder of blood vessels in the brain, specifically the internal carotid arteries and the arteries that branch from them. These vessels, which provide oxygen-rich blood to the brain, narrow over time. The narrowing of these vessels reduces blood flow in the brain. In an attempt …

Definition Melasma is a condition in which areas of the skin become darker than the surrounding skin. Doctors call this hyperpigmentation. It typically occurs on the face, particularly the forehead, cheeks and above the upper lip. The dark patches often appear on both sides of the face in a nearly …

Definition Milk allergy is one of the more common food allergies and affects many people. It’s a result of an abnormal immune response to the constituent parts of the milk from any animal (the most common allergy response is due to alpha S1-casein, a protein in cow’s milk). Milk-induced allergic …

Definition Myopia, otherwise known as short-sightedness, is a common eye condition that causes objects in the distance to appear blurred while close objects are often seen clearly. It occurs when the eye has too much focusing power, either due to the eye being too long or the cornea being more …

Definition Molluscum contagiosum is a mild skin disease (skin infection) caused by a virus (molluscum contagiosum virus, a member of the Poxviridae family) that causes usually painless small bumps or lumps (flesh-colored or skin-colored, dome-shaped papules); some may be umbilicated, meaning the lesion has a central depression with a spot …

Definition Misophonia, also known as the “hatred or dislike of sound,” is characterized by the sensitivity to specific sounds, accompanied by an unpleasant emotional and/or physical response. People with misophonia liken the experience of the sound trigger more closely to irritation, disgust, or even pain, rather than anxiety or fear. …

Introduction Marasmus is a type of protein-energy malnutrition that can affect anyone but is mainly seen in children. You can get marasmus if you have a severe deficiency of nutrients like calories, proteins, carbohydrates, vitamins, and minerals. It is more common in developing countries, like in some areas of Asia …

Metrorrhagia Overview Metrorrhagia, also referred to as abnormal uterine bleeding, refers to vaginal bleeding among women that is not in sync with their normal menstrual period.  An example of metrorrhagia can be seen when a woman experiences a heavier, prolonged period of bleeding more often than the normal menstrual duration …