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BACM symptoms that follow are most frequently calf pain, gait complaints, and inability to walk. [2] The condition is self-limited and full restitution can be expected. In very rare cases, however, rhabdomyolysis may develop. [1] Affected are preschool and school-age children with a male predominance. [2]
There are many proposed causes of sarcopenia and it is likely the result of multiple interacting factors. Understanding of the causes of sarcopenia is incomplete, however, changes in hormones, immobility, age-related muscle changes, nutrition, and neurodegenerative changes have all been recognized as potential causative factors.
Osteomalacia in children is known as rickets, and because of this, use of the term "osteomalacia" is often restricted to the milder, adult form of the disease. Signs and symptoms can include diffuse body pains, muscle weakness, and fragility of the bones.
Weakness comes on slowly (over months to years) in an asymmetric manner and progresses steadily, leading to severe weakness and wasting of arm and leg muscles. IBM is more common in men than women. [10] Patients may become unable to perform activities of daily living and most require assistive devices within 5 to 10 years of symptom onset.
Duchenne muscular dystrophy causes progressive muscle weakness due to muscle fiber disarray, death, and replacement with connective tissue or fat. [3] The voluntary muscles are affected first, especially those of the hips, pelvic area, thighs, calves.
Muscle weakness can also be classified as either "proximal" or "distal" based on the location of the muscles that it affects. Proximal muscle weakness affects muscles closest to the body's midline, while distal muscle weakness affects muscles further out on the limbs. Proximal muscle weakness can be seen in Cushing's syndrome [18] and ...
Myotonia congenita is a congenital neuromuscular channelopathy that affects skeletal muscles (muscles used for movement). It is a genetic disorder.The hallmark of the disease is the failure of initiated contraction to terminate, often referred to as delayed relaxation of the muscles and rigidity. [1]
The symptoms vary depending on the SMA type, the stage of the disease as well as individual factors. Signs and symptoms below are most common in the severe SMA type 0/I: [19] [medical citation needed] Areflexia, particularly in extremities; Overall muscle weakness, poor muscle tone, limpness or a tendency to flop