Multiple Sclerosis (MS) is a condition that affects the brain and spinal cord, causing damage to the nerves that carry messages between them. This damage can lead to a variety of symptoms, such as problems with vision, movement, sensation, balance, thinking and emotions. MS is a lifelong condition that can sometimes cause serious disability, although it can also be mild or moderate in some cases. There is no cure for MS, but treatments can help manage the symptoms and reduce the frequency of relapses.
MS affects more than 2.8 million people worldwide and around 130,000 people in the UK. It is one of the most common causes of neurological disability in young adults. It is more common in women than men, and usually starts in the 20s, 30s or 40s. The exact cause of MS is unknown, but it is thought to involve a combination of genetic and environmental factors that trigger an abnormal immune response against the myelin sheath, the protective layer that surrounds the nerve fibres.
MS is a complex and unpredictable condition that can affect people in different ways. There are four main types of MS:
- Relapsing remitting MS (RRMS): This is the most common type of MS, affecting around 85% of people with MS. People with RRMS have episodes of new or worsening symptoms, called relapses, followed by periods of recovery, called remissions. The symptoms may disappear completely or partially after a relapse, but some may persist or get worse over time.
- Secondary progressive MS (SPMS): This type of MS usually develops after many years of RRMS. People with SPMS have a gradual worsening of symptoms over time, with or without occasional relapses. About two-thirds of people with RRMS will develop SPMS within 15 years of diagnosis.
- Primary progressive MS (PPMS): This type of MS affects about 10-15% of people with MS. People with PPMS have a steady increase in symptoms from the onset, without any relapses or remissions. PPMS tends to start later than other types of MS, usually in the 40s or 50s.
- Progressive relapsing MS (PRMS): This is a rare type of MS, affecting less than 5% of people with MS. People with PRMS have a steady progression of symptoms from the onset, as well as occasional relapses. PRMS can start at any age.
The symptoms of MS vary widely from person to person and can affect any part of the body. Some of the most common symptoms include:
- Fatigue: This is one of the most common and troublesome symptoms of MS. It is an overwhelming sense of exhaustion that can make everyday activities difficult or impossible.
- Vision problems: These can include blurred vision, double vision, loss of vision, colour blindness, eye pain or flashes of light. These are often caused by inflammation or damage to the optic nerve (optic neuritis).
- Numbness and tingling: These are abnormal sensations that can affect different parts of the body, such as the arms, legs or trunk. They are caused by damage to the sensory nerves.
- Muscle spasms, stiffness and weakness: These are problems with muscle function that can affect movement, balance and co-ordination. They are caused by damage to the motor nerves.
- Pain: This can be acute or chronic pain that can affect different parts of the body. It can be caused by nerve damage (neuropathic pain) or muscle spasms (musculoskeletal pain).
- Problems with thinking, learning and planning: These are cognitive problems that can affect memory, attention, concentration, reasoning and problem-solving. They are caused by damage to the brain tissue.
- Depression and anxiety: These are emotional problems that can affect mood, motivation and self-esteem. They can be caused by the impact of living with MS or by changes in brain chemistry.
- Sexual problems: These can include reduced libido, erectile dysfunction, vaginal dryness or difficulty reaching orgasm. They can be caused by physical or psychological factors.
- Bladder problems: These can include urinary urgency, frequency, incontinence or retention. They can be caused by damage to the nerves that control bladder function.
- Bowel problems: These can include constipation, diarrhoea or faecal incontinence. They can be caused by damage to the nerves that control bowel function.
- Speech and swallowing difficulties: These can include slurred speech, difficulty finding words or swallowing food or drink. They can be caused by damage to the nerves that control speech and swallowing.
The severity and impact of these symptoms can vary from person to person and over time. Some people may only experience mild or occasional symptoms, while others may have more severe or frequent symptoms that affect their quality of life. The symptoms can also be influenced by factors such as stress, infection, temperature, medication or menstruation.
MS can be a challenging condition to live with, but there are ways to manage the symptoms and cope with the changes. There are various treatments available for MS, such as medication, therapy, surgery or complementary therapies. These can help reduce inflammation, prevent relapses, slow down progression, relieve symptoms or improve function. There are also support services and resources available for people with MS and their families, such as MS nurses, physiotherapists, occupational therapists, counsellors, social workers or support groups. These can provide information, advice, guidance, practical help or emotional support.
MS is not a fatal condition, but it can affect life expectancy to some extent. The average life expectancy for people with MS is about 5 to 10 years lower than the general population. However, this can vary depending on the type of MS, the age of onset, the severity of symptoms and the availability of treatment. Many people with MS can live long and fulfilling lives with the right care and support.
If you want to learn more about MS, you can visit the following websites:
- MS Society: A UK charity that provides information, support and research for people affected by MS.
- MS Trust: A UK charity that provides information, education and specialist services for people living with MS.
- NHS: The UK’s national health service that provides information and advice on health conditions and treatments.