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The prevalence of muscular dystrophy (MD) is generally similar across populations, including in America and China, as it is primarily determined by genetic factors rather than geographical location. However, differences in healthcare access, genetic screening, and awareness may affect diagnosis and reporting rates in each country. In the U.S., there is a more robust framework for genetic testing and support for MD, which may lead to higher reported cases. In contrast, in China, underreporting may occur due to a lack of resources or awareness, potentially influencing perceived prevalence rates.
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What type of allele is responsible for causing duchenne muscular dystrophy?
Duchenne muscular dystrophy is caused by a recessive allele on the X chromosome. This means that males are more commonly affected since they only have one X chromosome. Females can carry the allele but are usually not affected due to having a second X chromosome that often carries a normal copy of the gene.
What does it it mean when someone tells you you got guns but hes not actually having a gun its a comment on a picture an American saying?
Normally in America, having "guns" means that your arms are very muscular.
What is the Difference between muscular sclerosis and muscular dystrophy?
Multiple sclerosis means "many scars" on the myelin sheath of the central nervous system, and muscular dystrophy refers to muscle weakness and atrophy. Multiple sclerosis affects nerve while muscular dystrophy affects muscle. Some of the symptoms are similar, such as extreme fatigue and difficulty with movement, but MS is an autoimmune disorder that can flare and affect a different area of the CNS each time while MD is a genetic disorder that is progressive and often follows a specific pattern (areas) of muscle wasting. With MS, disability occurs when the flares are more constant and cause permanent nerve damage to an area of the body, sometimes resulting in being blind, incontinent, wheelchair bound, or even bed ridden. With muscular dystrophy, the disability comes from the lack of stamina due to muscles wasting. Having less and less healthy muscle fibers makes the person exhausted doing simple tasks and eventually can lead to inability to lift, carry, walk, or stand. Falls can happen with both disorders, as healthy nerve and muscle are needed to balance one's body. Falling can result in a secondary disability and recovery is slow and incomplete sometimes. Both of these diseases and their sufferers need our support.
Muscular dystrophy?
DefinitionDuchenne muscular dystrophy is an inherited disorder that involves rapidly worsening muscle weakness.Alternative NamesPseudohypertrophic muscular dystrophy; Muscular dystrophy - Duchenne typeCauses, incidence, and risk factorsDuchenne muscular dystrophy is a rapidly-worsening form of muscular dystrophy. Other muscular dystrophies (including Becker's muscular dystrophy) get worse much more slowly.Duchenne muscular dystrophy is caused by a defective gene for dystrophin (a protein in the muscles). However, it often occurs in people without a known family history of the condition.Because of the way the disease is inherited, males are more likely to develop symptoms than are women. The sons of females who are carriers of the disease (women with a defective gene but no symptoms themselves) each have a 50% chance of having the disease. The daughters each have a 50% chance of being carriers.Duchenne muscular dystrophy occurs in approximately 1 out of every 3,600 male infants. Because this is an inherited disorder, risks include a family history of Duchenne muscular dystrophy.SymptomsSymptoms usually appear before age 6 and may appear as early as infancy. They may include:FatigueMental retardation (possible, but does not worsen over time)Muscle weakness Begins in the legs and pelvis, but also occurs less severely in the arms, neck, and other areas of the bodyDifficulty with motor skills (running, hopping, jumping)Frequent fallsRapidly worsening weaknessProgressive difficulty walkingAbility to walk may be lost by age 12By age 10, the person may need braces for walking. By age 12, most patients are confined to a wheelchair.Signs and testsA complete nervous system (neurological), heart, lung, and muscle exam may show:Abnormal heart muscle (cardiomyopathy)Congestive heart failure or irregular heart rhythm (arrhythmias) -- rareDeformities of the chest and back (scoliosis)Enlarged calf muscles, which are eventually replaced by fat and connective tissue (pseudohypertrophy)Loss of muscle mass (wasting)Muscle contractures in the heels, legsMuscle deformitiesRespiratory disorders, including pneumonia and aspiration of food or fluid into the lungs (in late stages of the disease)Tests may include:Electromyography (EMG)Genetic testsMuscle biopsySerum CPKTreatmentThere is no known cure for Duchenne muscular dystrophy. Treatment aims to control symptoms to maximize quality of life. Gene therapy may become available in the future.Activity is encouraged. Inactivity (such as bedrest) can worsen the muscle disease. Physical therapy may be helpful to maintain muscle strength and function. Orthopedic appliances (such as braces and wheelchairs) may improve mobility and the ability to care for yourself.Support GroupsYou can ease the stress of illness by joining a support group where members share common experiences and problems. See muscular dystrophy - support group. The Muscular Dystrophy Association is an excellent source of information on this disease.Expectations (prognosis)Duchenne muscular dystrophy leads to quickly worsening disability. Death usually occurs by age 25, typically from lung disorders.ComplicationsCardiomyopathyCongestive heart failure (rare)DeformitiesHeart arrhythmias (rare)Mental impairment (varies, usually minimal)Permanent, progressive disability Decreased mobilityDecreased ability to care for selfPneumonia or other respiratory infectionsRespiratory failureCalling your health care providerCall your health care provider if:Your child has symptoms of Duchenne muscular dystrophySymptoms worsen, or new symptoms develop, particularly fever with cough or breathing difficultiesPreventionGenetic counseling is advised if there is a family history of the disorder. Duchenne muscular dystrophy can be detected with about 95% accuracy by genetic studies performed during pregnancy.ReferencesKliegman RM, Behrman RE, Jenson HB, Stanton BF. Muscular dystrophies. In: Kliegman RM, Behrman RE, Jenson HB, Stanton BF. Nelson Textbook of Pediatrics. 18th ed. Philadelphia, Pa:Saunders Elsevier; 2007:chap 608.
What are the implications and challenges of Duchenne muscular dystrophy in females?
Duchenne muscular dystrophy is a genetic disorder that primarily affects males, but females can also be carriers of the gene mutation. While females typically do not show symptoms of the disease, they can experience muscle weakness and other complications. The challenges for females include the risk of passing the gene mutation to their children and the emotional burden of having family members affected by the disease. Additionally, females may face difficulties in accessing appropriate medical care and support services due to the focus on males in research and treatment.
If the grandmother on the mothers side and the father of an unborn child both have Muscular Dystrophy what is the likelyhood of the child having it or being a carrier?
The likelihood of the child having Muscular Dystrophy (MD) or being a carrier depends on the specific type of MD and its inheritance pattern. If the mother's mother (grandmother) has an X-linked form of MD, there is a 50% chance that the child, if male, will be affected and a 50% chance that a female child will be a carrier. If the MD is autosomal recessive, then both parents would need to be carriers for the child to be affected, but the father, being male, may not be a carrier if he is affected. Genetic counseling is recommended for a more accurate assessment based on family history and genetic testing.
What does musculare mean?
Muscular means pertaining to or having muscles. It's often used to describe someone who is brawny.
Becker muscular dystrophy?
DefinitionBecker muscular dystrophy is an inherited disorder that involves slowly worsening muscle weakness of the legs and pelvis.Alternative NamesBenign pseudohypertrophic muscular dystrophy; Becker's dystrophyCauses, incidence, and risk factorsBecker muscular dystrophy is very similar to Duchenne muscular dystrophy, except that it gets worse at a much slower rate.The disorder is passed down through families (inherited). Having a family history of the condition raises your risk.Becker muscular dystrophy occurs in approximately 3 - 6 out of every 100,000 males. It is less common than Duchenne muscular dystrophy.SymptomsFemales rarely develop symptoms. Males will develop symptoms if they inherit the defective gene. Symptoms usually appear in boys at about age 12, but may begin later.Muscle weakness of the lower body, including the legs and pelvis area, slowly gets worse, causing:Difficulty walking that gets worse over time; by age 25-30 the person is usually unable to walkFrequent fallsDifficulty with running, hopping, and jumpingLoss of muscle massMuscle weakness in the arms, neck, and other areas is not as severe as in the lower body.Other symptoms may include:Breathing problemsCognitive problems (these do not get worse over time)FatigueLoss of balance and coordinationSigns and testsThe health care provider will do a nervous system (neurological) and muscle examination. A careful medical history is also important, because the pattern of symptom development resembles that of Duchenne's muscular dystrophy. However, Becker muscular dystrophy gets worse much more slowly.An exam may find:Abnormally developed bones, leading to deformities of the chest and back (scoliosis)Abnormality of heart muscle function (cardiomyopathy)Congestive heart failure or irregular heartbeat (arrhythmias) - rareMuscle deformities, including: Contractures of heels and legsAbnormal fat and connective tissue in calf musclesMuscle loss that begins in the legs and pelvis, then moves on to the muscles of the shoulders, neck, arms, and respiratory systemTests that may be done include:CPK blood testElectromyography (EMG) nerve testingMuscle biopsyor genetic blood testTreatmentThere is no known cure for Becker muscular dystrophy. The goal of treatment is to control symptoms to maximize the person's quality of life. Some doctors prescribe steroids to help keep a patient walking for as long as possible.Activity is encouraged. Inactivity (such as bed rest) can make the muscle disease worse. Physical therapy may be helpful to maintain muscle strength. Orthopedic appliances such as braces and wheelchairs may improve mobility and self-care.Genetic counseling may be recommended. Daughters of a man with Becker muscular dystrophy may carry the defective gene and could pass it onto their sons.Support GroupsYou can ease the stress of illness by joining a support group where members share common experiences and problems.See: Muscular dystrophy - support groupExpectations (prognosis)Becker muscular dystrophy leads to slowly worsening disability, although the degree of disability varies. Some men may need a wheelchair, while others may only need to use walking aids such as canes or braces.ComplicationsHeart-related complications such as cardiomyopathyLung failurePneumonia or other respiratoryinfectionsIncreasing and permanent disability, that leads to: Decreased ability to care for selfDecreased mobilityCalling your health care providerCall your health care provider if:Symptoms of Becker muscular dystrophy appearA person with Becker muscular dystrophy develops new symptoms (particularly feverwith cough or breathing difficulties)You are planning to start a family and you or other family members have been diagnosed with Becker muscular dystrophyPreventionGenetic counseling may be advised if there is a family history of Becker muscular dystrophy.ReferencesKliegman RM, Behrman RE, Jenson HB, Stanton BF. Muscular dystrophies. In: Kliegman RM, Behrman RE, Jenson HB, Stanton BF, eds. Nelson Textbook of Pediatrics. 18th ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 608.
What does it take to have the body of a muscular jock but with out having to be in sports?
Steroids.
What are the health risks to not having much muscular strength?
Osteoporosios
What you the definition of hypertonic?
Having extreme muscular or arterial tension.
What is the difference between spinal muscle atrophy and muscular dystrophy?
Multiple sclerosis means "many scars" on the myelin sheath of the central nervous system, and muscular dystrophy refers to muscle weakness and atrophy. Multiple sclerosis affects nerve while muscular dystrophy affects muscle. Some of the symptoms are similar, such as extreme fatigue and difficulty with movement, but MS is an autoimmune disorder that can flare and affect a different area of the CNS each time while MD is a genetic disorder that is progressive and often follows a specific pattern (areas) of muscle wasting. With MS, disability occurs when the flares are more constant and cause permanent nerve damage to an area of the body, sometimes resulting in being blind, incontinent, wheelchair bound, or even bed ridden. With muscular dystrophy, the disability comes from the lack of stamina due to muscles wasting. Having less and less healthy muscle fibers makes the person exhausted doing simple tasks and eventually can lead to inability to lift, carry, walk, or stand. Falls can happen with both disorders, as healthy nerve and muscle are needed to balance one's body. Falling can result in a secondary disability and recovery is slow and incomplete sometimes. Both of these diseases and their sufferers need our support.
