Symptoms of MSA usually start when someone is between 50 and 60 years of age, but they can begin at any time after 30.
The symptoms are wide-ranging and include muscle control problems, similar to those of Parkinson's disease.
Many different functions of the body can be affected, including the urinary system, blood pressure control and muscle movement.
Although there are many different possible symptoms of MSA, not everyone who's affected will have all of them.
Men and women with MSA will usually have one or more of the following bladder symptoms:
Men with MSA will usually have erectile dysfunction (the inability to get and maintain an erection), although this is a common problem that many men without the condition develop.
Someone with MSA will often feel lightheaded, dizzy and faint after standing up. This is known as postural hypotension and is caused by a drop in blood pressure when you stand up or suddenly change position.
When you stand up after lying down, your blood vessels usually narrow quickly and your heart rate increases slightly to prevent your blood pressure from dropping and decreasing blood flow to your brain.
This function is controlled by the autonomic nervous system. But with MSA, this system does not work properly, so the control is lost.
In MSA, a part of the brain called the cerebellum is damaged. This can make the person clumsy and unsteady when walking, and can also cause slurred speech.
These problems are collectively known as cerebellar ataxia.
A person with MSA has much slower movements than normal (bradykinesia). This can make it difficult to carry out everyday tasks. Movement is hard to initiate, and the person will often have a distinctive slow, shuffling walk with very small steps.
Some people may also have stiff and tense muscles. This can make it even more difficult to move around and cause painful muscle cramps (dystonia).
These symptoms are typical of Parkinson's disease but, unfortunately, the medicine used to relieve them in people with Parkinson's disease (levodopa) is not very effective for people with MSA.
People with MSA may also have:
The causes of MSA are not well understood.
It does not appear to be inherited – there's no evidence that an affected person's children will develop it.
Research is looking at whether family history and the environment play a role in your chances of getting MSA.
The brain cells of a person with MSA contain a protein called alpha-synuclein. A build-up of abnormal alpha-synuclein is thought to be responsible for damaging areas of the brain that control balance, movement and the body's normal functions.
There's no specific test to diagnose MSA.
A diagnosis can usually be made based on the symptoms, although it can potentially be confused with Parkinson's disease.
A person is more likely to have MSA rather than Parkinson's disease if:
If MSA is suspected, a doctor (usually a neurologist) will test the person's reflexes and normal bodily functions, such as their bladder function and blood pressure.
A brain scan, usually an MRI scan, is often needed to detect any loss of brain cells.
There's currently no cure for MSA and no way of slowing its progression.
People with the condition typically live for 6 to 9 years after their symptoms start and may get worse quickly during this time. Some people may live for more than 10 years after being diagnosed.
The symptoms can be managed so that the person is as independent and comfortable as possible.
Find out how to manage:
Practical and financial help is available if you care for someone with MSA.
Your local authority can carry out a carer's assessment to assess your needs and determine the help and support you're entitled to.
Find out more about carer's assessments.
If you have MSA and are finding coping with day-to-day life difficult, your doctor or nurse can refer you to a social worker.
They can carry out an assessment and recommend the help you need. For example, you may need:
Find out more about care and support needs assessments.
The Multiple System Atrophy Trust provides help and support to people with MSA, as well as their families, carers and the healthcare professionals treating them.
The charity also funds research to discover the cause of MSA and to try to find a cure.
Their helpline number is 0333 323 4591 (Monday to Friday, 9am to 5pm). You can also email email@example.com.