| Term | Definition |
|---|---|
| Magnetic resonance angiography (MRA) |
An imaging technique designed to view the major arteries of the brain. |
| Magnetic resonance imaging (MRI) |
Noninvasive radiologic diagnostic technique that produces computerized images of internal body tissues with magnetism, radio waves, & a computer. |
| Magnetoencephalography |
Noninvasive technique that detects and records the magnetic field associated with electrical activity in the brain. |
| Malocclusion |
Abnormality in the coming together of teeth; teeth not aligned properly. |
| Manometry testing |
Test to measure the pressure of vapors and gases. |
| Manual Lymphatic Drainage (MLD) |
Gentle massage treatment intended by proponents to encourage the natural circulation of the lymph through the body. MLD uses a specific amount of pressure (less than 9 ounces per square inch) and rhythmic circular movements to stimulate lymph flow. |
| Measles |
Causes fever, rash, cough, runny nose and watery eyes. It can also cause ear infections and brain swelling problems and even death. |
| Meningococcal conjugate vaccine (MCV4) |
(MCV4) protects against 4 strains ("types") of bacterial meningitis caused by the bacteria N. meningitidis. Bacterial meningitis is an infection of the fluid around the brain and spinal cord. It is a serious illness that can cause high fever, headache, stiff neck and confusion. It can also cause more serious blindness. Children should get the MCV4 vaccine at 11 to 12 years of age. Children older than 12 years of age who have not received the vaccine should receive it before starting high school. |
| Menstrual cycle regular |
Predictably timed period (menstrual cycle) every month. |
| Metabolic panel |
Lab work that provides your doctor with information on the status of your kidneys, blood sugar, electrolyte & acid/base balance. |
| Microcephaly |
Small head size for age. |
| Microsurgery |
Surgery under a microscope. |
| Mitochondrial Disorder |
Neuromuscular disease. |
| Mitral valve prolapse |
Heart valve abnormality. |
| MMR vaccine |
Vaccine to protect against the measles, mumps and rubella. |
| Mumps |
Causes fever, headache and painful swelling of one or both of the major saliva glands. Mumps can lead to meningitis (infection of the coverings of the brain and spinal cord) and, very rarely, to brain swelling. Rarely, it can cause the testicles of boys or men to swell, which can make them unable to have children. |
| Muscle rigidity |
Involuntary tensing and stiffness of muscles. |
| Mutation |
Permanent change, a structural alteration in the DNA or RNA. |
| Myoclonic seizures |
Seizure characterized by jerking movements of a muscle or muscle group without loss of consciousness. |
