Introduction Dystonia is a medical term that describes a range of movement disorders that cause muscle spasms and contractions. The spasms and contractions may either be sustained or may come and go. Movements are often repetitive and cause unusual, awkward and sometimes painful postures. Tremor (shaking) can also be a characteristic of some types of dystonia. Dystonia is thought to be a neurological condition (caused by underlying problems with the brain and nervous system). However, in most cases brain functions such as intelligence, memory and language remain unaffected. Types of dystonia Dystonia can affect only one muscle or a group of muscles. There are five main types of dystonia. They are: Focal dystonia - where a single region, such as the hand or eyes, is affected. Cervical dystonia, blepharospasm (abnormal twitch of the eyelid), laryngeal dystonia and writers cramp are all examples of focal dystonia. Segmental dystonia - where two or more connected regions of the body are affected. Cranial dystonia (blepharospasm affecting the lower face and jaw or tongue) is an example. Multifocal dystonia - where two or more regions of the body that arent connected to each other, such as the left arm and left leg, are affected. Generalised dystonia - where the trunk and at least two other parts of the body are affected. The legs may or may not be affected. Hemidystonia - where one entire side of the body is affected. About 90% of all cases are either cervical dystonia (which affects the neck muscles) or blepharospasm (which affects the eyelids). These are both focal dystonias that tend to develop later in life. They don’t usually get any worse and no other muscles are affected. Read more about the symptoms of dystonia. Causes of dystonia Exactly how dystonia develops remains uncertain, but its thought to be caused by a problem with the part of the brain that controls muscle movement (the basal ganglia). If theres no identifiable cause of dystonia, or if the cause is genetic, its described as primary dystonia. Secondary dystonia is where dystonia occurs as a symptom of an underlying condition or injury. Common causes include stroke, brain injury, encephalitis (infection of the brain) and Parkinson’s disease. Read more about the causes of dystonia. Diagnosing dystonia Diagnosing dystonia is a complicated process that involves identifying the precise nature and specific features of a person’s movement disorders, and then seeing which type of dystonia classification they fit into. When diagnosing dystonia, its important to confirm whether you have primary or secondary dystonia because this will determine the type of treatment you need. If you have typical signs of late-onset focal dystonia, specific investigations may not be required. However, tests may be needed to confirm whether you have primary or secondary dystonia. These may include brain scans, urine or blood tests and genetic testing. Read more about how dystonia is diagnosed. Treating dystonia Theres no cure for dystonia, but the condition can usually be effectively managed. Treatment will vary depending on the type of dystonia you have and the precise nature of your symptoms. However, the four main types of treatment are: botulinum toxin - widely used to treat neurological conditions that involve abnormal muscle contractions, such as dystonia; its injected into the affected muscles to temporarily weaken them and reduce spasms medication - such as anticholinergics, Baclofen and muscle relaxants physiotherapy - where exercises are used to improve range of motion and posture and prevent muscle weakness surgery - if other treatments are unsuccessful, the nerve endings that are causing spasms can be cut (selective peripheral denervation), or electrodes can be implanted within the brain which are connected to a small device thats similar to a pacemaker (deep brain stimulation) Read more about how dystonia is treated. Outlook Dystonia is an unpredictable condition. It tends to progress slowly and the severity of a persons symptoms can vary from one day to another. Focal dystonia usually progresses gradually over a period of about five years and then doesnt get any worse. Sometimes, a persons symptoms will improve or disappear completely. This is known as total remission and its thought to occur in around 5-10% of people. Total remission is more likely in cases of secondary dystonia, such as dystonia that occurs after a stroke. If someone has another underlying condition, such as Parkinson’s disease, the symptoms of dystonia are more likely to last for the rest of their lives. This is what Ive got and Ive got suffer with it all my life thanks to the 6 bullies that made me like this I cant talk properly, sing, work xx
Posted on: Sat, 30 Aug 2014 18:41:07 +0000
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