The disorder that causes rapid muscle growth occurs in people who have myostatin-related muscle hypertrophy, which is a rare genetic condition that reduces body fat and can double the body's muscle mass. The condition, which is also known as...
Skeletal muscle is the muscle tissue that allows you to produce movement to perform a multitude of everyday activities. It contracts voluntarily, meaning you tell the muscle to contract through the connection from your brain to your muscles. In...
ALS, or amyotrophic lateral sclerosis, is a form of motor neuron disease. These diseases share in common the progressive degeneration and death of the motor neurons--nerve cells in the spinal cord and brain that enable muscle movement. Symptoms...
Your body consists of over 600 muscles that make up about 40 percent of your total body weight. These muscles are constantly contracting and relaxing in an effort to make your body parts move. You can increase the strength of your muscles by...
The muscles of the ocular system control the movement of the eyes and the eyelids. There are several disorders of the eye muscles that can cause the eyes to not move correctly or in unison or that can cause the eyelids to droop into the field of...
According to MedlinePlus, a service of the U.S. National Library of Medicine and the U.S. National Institutes of Health, there are numerous problems that can affect the body's muscles, and muscle disorders can cause pain, weakness or paralysis....
L-Carnosine is a naturally occurring dipeptide found in muscles. A dipeptide is a molecule with two amino acids connected with a peptide bond. Carnosine is an antioxidant that also affects neurotransmitter function. Purported medical benefits of...
The muscles in your body make it possible to move. Muscles cover your bones and make up the bulk of your heart. In fact, your heart is the most important muscle in your body because it pumps blood to your organs. Even your blood vessels contain...
Vitamin E, found in high amounts in sunflower seeds, nuts, vegetable oils, spinach, broccoli and kiwi fruit, is an important nutrient for your muscles. Low levels of vitamin E may put you at risk for developing muscle diseases. It may also help...
Muscular eye disorders can be caused by damage to the nerves that control the muscles in the eye or by damage to the muscles themselves. There are several ocular muscle disorders; some are common, and others are very rare. Muscular eye disorders...
Selenium is a trace mineral you need in small amounts each day, but it is important for normal muscle function. Having a selenium deficiency leads to all kinds of side effects in normally healthy muscle tissue. A variety of meat, seafood, dairy...
Muscles can be affected by many problems and disorders, which can cause weakness, pain, and loss of movement or paralysis. Muscular disorders, medically known as myopathies, can result from injuries, overuse, genetics, inflammation, diseases or...
If your foot slaps the ground while walking or running, you may have foot drop, which is caused by a weakness or paralysis of the muscles used to lift the front part of the foot. There are several different causes of this problem and they are...
Muscle-building diseases affect every part of daily functioning, from breathing to walking. These health problems usually result from genetic disorders inherited from one or both parents. Because the body's muscles help with movement and aid in...
Although they both involve involuntary contractions of muscle tissue, muscle twitches and muscle spasms are different conditions with different causes, according to the University of Maryland Medical Center. Muscle twitches, also called...
Sensations and muscle movement in the leg are controlled by a network of nerves and muscles that work together to send signals from the brain to the leg. Problems in the transmission of nerve signals or muscle structure can lead to pain in the...
Feeding is hard work for an infant, who needs to coordinate sucking, swallowing and breathing all at the same time. Feeding fatigue can be a serious symptom in an infant, who may not be getting the nutrition he needs if he tires before the end of...
The sciatic nerves run the full length of each leg, from the hip to the sole of the foot. Several issues may irritate the nerve, including tight hip muscles and spinal disorders, such as herniated disks. Symptoms of nerve irritation include pain...
Physiotherapy helps to improve the motor skills of children suffering from conditions that limit their movement and coordination. This form of therapy is also for individuals that have irregularities in areas of their brain that control muscle...
TMJ--temporomandibular joint and muscle disorders--cause pain and tenderness in the chewing muscles and joints that are attached to your lower jaw and to your skull, according to the National Institutes of Health (NIH). The NIH says many of the...
Inclusion body myositis is a form of polymyositis in which skeletal muscles become inflamed and weak. This condition is most common in black females between the age of 30 to 50. Left untreated, inclusion body myositis can lead to severe losses of...
Muscle pain, muscle weakness and paralysis can be signs of serious muscular problems. MedlinePlus says that muscle disorders can occur as a result of injury, overuse, infections, medications, genetics and inflammation. Muscular system diseases...
Any food that is high in protein can be processed for swallowing difficulties. Depending on the condition that is causing the swallowing difficulty, the food must be chopped, mashed, ground, pureed or liquified so that little to no chewing is...
Disease of the muscular system, or myopathy, occurs when the muscle fibers do not function properly, according to "Disorders of Voluntary Muscles." As a result, weakness and decreased muscle mass often ensue. The disease happens among skeletal...
There are a variety of diseases that affect the muscles of the eye and eyelid. Some of these conditions are ocular manifestations of systemic diseases, while other conditions may be genetic. Double vision and droopy lids are symptoms of many of...
Neck pain or neck stiffness is a discomfort felt on any part of the neck. This discomfort involves the muscles, nerves, spinal vertebrae and the cushioning disc between them. Areas near the neck, such as the shoulder, jaw, head and upper arms can...
The human body consists of approximately 640 muscles that are named, in addition to an innumerable amount of smaller muscles that are not. All of these muscles combined play an intricate role in the way your body moves and works, each with a...
Jaw and tooth pain may feel like a dull ache or a sharp shooting pain. The pain may be constant or triggered by heat or cold. Whatever the symptoms of your jaw and tooth pain, it is important to consider the causes. Serious pain can be a sign of a...
Temporomandibular joint and muscle disorders involve the chewing muscles and joints connecting the lower jaw to the skull. Although TMJ is technically the abbreviation for the joint, people commonly use this term as shorthand for the disorders and...
Cardiogenic shock is the result of inadequate circulation of blood due to ventricle failure; learn about cardiogenic shock in this heart healthy video.
TMJ is a disorder associated with joint pain and muscle soreness. Learn some healthy options for dealing with TMJ in this video.
Parkinson's disease is a disorder that affects nerve cells in the part of the brain controlling muscle movement. Learn about Parkinson's disease symptoms, treatments, and diagnosis in this video on health and diseases.
Restless leg syndrome (RLS) is a condition in which your legs feel extremely uncomfortable while you're sitting or lying down. It makes you feel like getting up and moving around. When you do so, the unpleasant feeling of restless leg syndrome...
Muscle spasms and cramps are often harmless but can accompany serious medical conditions. Learn about spasms and cramps in this medical video.
