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Items: 17

1.

Atrophy

Decrease in the size of a cell, tissue, organ, or multiple organs, associated with a variety of pathological conditions such as abnormal cellular changes, ischemia, malnutrition, or hormonal changes. [from MeSH]

MedGen UID:
83084
Concept ID:
C0333641
Pathologic Function
2.

Steinert myotonic dystrophy syndrome

Myotonic dystrophy type 1 (DM1) is a multisystem disorder that affects skeletal and smooth muscle as well as the eye, heart, endocrine system, and central nervous system. The clinical findings, which span a continuum from mild to severe, have been categorized into three somewhat overlapping phenotypes: mild, classic, and congenital. Mild DM1 is characterized by cataract and mild myotonia (sustained muscle contraction); life span is normal. Classic DM1 is characterized by muscle weakness and wasting, myotonia, cataract, and often cardiac conduction abnormalities; adults may become physically disabled and may have a shortened life span. Congenital DM1 is characterized by hypotonia and severe generalized weakness at birth, often with respiratory insufficiency and early death; intellectual disability is common. [from GeneReviews]

MedGen UID:
10239
Concept ID:
C0027126
Disease or Syndrome
3.

Spinal muscular atrophy

Muscular weakness and atrophy related to loss of the motor neurons of the spinal cord and brainstem. [from HPO]

MedGen UID:
506049
Concept ID:
CN006358
Finding
4.

Skeletal muscle atrophy

The presence of skeletal muscular atrophy (which is also known as amyotrophy). [from HPO]

MedGen UID:
505481
Concept ID:
CN002890
Finding
5.

Myotonic dystrophy

MedGen UID:
431820
Concept ID:
CN068865
Disease or Syndrome
6.

Muscular dystrophy

The term dystrophy means abnormal growth. However, muscular dystrophy is used to describe primary myopathies with a genetic basis and a progressive course characterized by progressive skeletal muscle weakness and wasting, defects in muscle proteins, and histological features of muscle fiber degeneration (necrosis) and regeneration. If possible, it is preferred to use other HPO terms to describe the precise phenotypic abnormalities. [from HPO]

MedGen UID:
351199
Concept ID:
C1864711
Finding
7.

Muscular dystrophy

Muscular dystrophy (MD) is a group of more than 30 inherited diseases. They all cause muscle weakness and muscle loss. Some forms of MD appear in infancy or childhood. Others may not appear until middle age or later. The different types can vary in whom they affect, which muscles they affect, and what the symptoms are. All forms of MD grow worse as the person's muscles get weaker. Most people with MD eventually lose the ability to walk. There is no cure for muscular dystrophy. Treatments can help with the symptoms and prevent complications. They include physical and speech therapy, orthopedic devices, surgery, and medications. Some people with MD have mild cases that worsen slowly. Others cases are disabling and severe. NIH: National Institute of Neurological Disorders and Stroke.  [from MedlinePlus]

MedGen UID:
44527
Concept ID:
C0026850
Congenital Abnormality; Disease or Syndrome
8.

Spinal muscular atrophy

Spinal muscular atrophy (SMA) is characterized by muscle weakness and atrophy resulting from progressive degeneration and loss of the anterior horn cells in the spinal cord (i.e., lower motor neurons) and the brain stem nuclei. The onset of weakness ranges from before birth to adolescence or young adulthood. The weakness is symmetric, proximal > distal, and progressive. Before the genetic basis of SMA was understood, it was classified into clinical subtypes; however, it is now apparent that the phenotype of SMN1-associated SMA spans a continuum without clear delineation of subtypes. Poor weight gain with growth failure, restrictive lung disease, scoliosis, joint contractures, and sleep difficulties are common complications. [from GeneReviews]

MedGen UID:
7755
Concept ID:
C0026847
Disease or Syndrome
9.

Duchenne muscular dystrophy

The dystrophinopathies include a spectrum of muscle disease caused by pathogenic variants in DMD, which encodes the protein dystrophin. The mild end of the spectrum includes the phenotypes of asymptomatic increase in serum concentration of creatine phosphokinase (CK) and muscle cramps with myoglobinuria. The severe end of the spectrum includes progressive muscle diseases that are classified as Duchenne/Becker muscular dystrophy when skeletal muscle is primarily affected and as DMD-associated dilated cardiomyopathy (DCM) when the heart is primarily affected. Duchenne muscular dystrophy (DMD) usually presents in early childhood with delayed milestones, including delays in sitting and standing independently. Proximal weakness causes a waddling gait and difficulty climbing. DMD is rapidly progressive, with affected children being wheelchair dependent by age 13 years. Cardiomyopathy occurs in individuals with DMD after age 18 years. Few survive beyond the third decade, with respiratory complications and cardiomyopathy being common causes of death. Becker muscular dystrophy (BMD) is characterized by later-onset skeletal muscle weakness; some individuals remain ambulatory into their 20s. Despite the milder skeletal muscle involvement, heart failure from DCM is a common cause of morbidity and the most common cause of death in BMD. Mean age of death is in the mid-40s. DMD-associated DCM is characterized by left ventricular dilation and congestive heart failure. Females heterozygous for a DMD pathogenic variant are at increased risk for DCM. [from GeneReviews]

MedGen UID:
3925
Concept ID:
C0013264
Disease or Syndrome
10.

Inborn genetic diseases

Diseases that are caused by genetic mutations present during embryo or fetal development, although they may be observed later in life. The mutations may be inherited from a parent's genome or they may be acquired in utero. [from MeSH]

MedGen UID:
181981
Concept ID:
C0950123
Disease or Syndrome
11.

Myotonic disorder

Diseases characterized by MYOTONIA, which may be inherited or acquired. Myotonia may be restricted to certain muscles (e.g., intrinsic hand muscles) or occur as a generalized condition. [from MeSH]

MedGen UID:
107510
Concept ID:
C0553604
Disease or Syndrome
12.

Neurodegeneration

Neurodegenerative disorders, such as Hunter syndrome, or sensory motor neuropathies, such as Friedreich ataxia and Charcot-Marie-Tooth syndrome. [from LNC]

MedGen UID:
101195
Concept ID:
C0524851
Disease or Syndrome
13.

Motor neuron disease

Diseases characterized by a selective degeneration of the motor neurons of the spinal cord, brainstem, or motor cortex. Clinical subtypes are distinguished by the major site of degeneration. In AMYOTROPHIC LATERAL SCLEROSIS there is involvement of upper, lower, and brainstem motor neurons. In progressive muscular atrophy and related syndromes (see MUSCULAR ATROPHY, SPINAL) the motor neurons in the spinal cord are primarily affected. With progressive bulbar palsy (BULBAR PALSY, PROGRESSIVE), the initial degeneration occurs in the brainstem. In primary lateral sclerosis, the cortical neurons are affected in isolation. (Adams et al., Principles of Neurology, 6th ed, p1089) [from MeSH]

MedGen UID:
38785
Concept ID:
C0085084
Disease or Syndrome
14.

Myelopathy

Your spinal cord is a bundle of nerves that runs down the middle of your back. It carries signals back and forth between your body and your brain. It is protected by your vertebrae, which are the bone disks that make up your spine. If you have an accident that damages the vertebrae or other parts of the spine, this can also injure the spinal cord. Other spinal cord problems include. - Tumors. - Infections such as meningitis and polio. - Inflammatory diseases. - Autoimmune diseases . - Degenerative diseases such as amyotrophic lateral sclerosis and spinal muscular atrophy. Symptoms vary but might include pain, numbness, loss of sensation and muscle weakness. These symptoms can occur around the spinal cord, and also in other areas such as your arms and legs. Treatments often include medicines and surgery. .  [from MedlinePlus]

MedGen UID:
11550
Concept ID:
C0037928
Disease or Syndrome
15.

Neuromuscular Diseases

Neuromuscular disorders affect the nerves that control your voluntary muscles. Voluntary muscles are the ones you can control, like in your arms and legs. Your nerve cells, also called neurons, send the messages that control these muscles. When the neurons become unhealthy or die, communication between your nervous system and muscles breaks down. As a result, your muscles weaken and waste away. The weakness can lead to twitching, cramps, aches and pains, and joint and movement problems. Sometimes it also affects heart function and your ability to breathe. Examples of neuromuscular disorders include. -Amyotrophic lateral sclerosis. -Multiple sclerosis. -Myasthenia gravis. -Spinal muscular atrophy. Many neuromuscular diseases are genetic, which means they run in families or there is a mutation in your genes. Sometimes, an immune system disorder can cause them. Most of them have no cure. The goal of treatment is to improve symptoms, increase mobility and lengthen life.  [from MedlinePlus]

MedGen UID:
10323
Concept ID:
C0027868
Disease or Syndrome
16.

Myopathy

Your muscles help you move and help your body work. Different types of muscles have different jobs. There are many problems that can affect muscles. Muscle disorders can cause weakness, pain or even paralysis. . Causes of muscle disorders include. -Injury or overuse, such as sprains or strains, cramps or tendinitis . -A genetic disorder, such as muscular dystrophy. -Some cancers. -Inflammation, such as myositis. -Diseases of nerves that affect muscles. -Infections. -Certain medicines. Sometimes the cause is not known.  [from MedlinePlus]

MedGen UID:
10135
Concept ID:
C0026848
Disease or Syndrome
17.

Disorder of the central nervous system

A structural abnormality of the central nervous system. [from HPO]

MedGen UID:
3306
Concept ID:
C0007682
Disease or Syndrome
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