Medically unexplained symptoms (MUS): symptoms and treatment

Struggling with persistent symptoms that don’t seem to match a recognised condition? We’re here to help you uncover the link between mind and body for effective relief.

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Medically unexplained symptoms (MUS) is a diagnosis that’s made when you have persistent physical problems, such as headaches, dizziness or pain, which don’t seem to match any recognised medical condition.

All medical disorders have both physical and psychological causes. Our state of mind has an important influence on how we experience physical illness. Symptoms of common physical disorders, such as asthma, diabetes or arthritis, are strongly influenced by our mental state. Our state of mind has an impact on our immune system and on the levels of hormones such as cortisol in our bodies.

Being diagnosed with MUS is not uncommon, with around a quarter of people visiting GPs expressing symptoms which can’t immediately be diagnosed as a recognised medical condition. This doesn’t mean that your situation can’t be treated; it requires looking beyond a diagnosis of physical illness.

Possible diagnoses for MUS

While initial diagnoses may conclude that you have MUS, further physical examinations or psychological assessments can ultimately help to determine whether there are existing physical or mental health conditions that are the reason behind your physical complaints.
Physical diagnoses which may be given for MUS include:

  • Irritable bowel syndrome (IBS) – Chronic stomach complaints
  • Fibromyalgia – Body pain and muscle tenderness
  • Migraines – Unexplained headaches, which you may have had scans or tests for
  • Non-epileptic attack disorder – Where you have what look like epileptic fits, but don’t have any problems with electrical activity in the brain normally seen in epilepsy.

Mental health diagnoses which may be given for MUS include:

  • Body dysmorphic disorder (BDD)

Where excessive concern about physical aspects of your body cause severe distress and impacts on daily functioning.

  • Dissociative disorder

Physical symptoms such as fits and loss of memory, which seem to be caused by problems in your nervous system, but are actually brought on by excessive stress.

  • Somatic symptom disorder (SSD)

A group of psychological disorders where physical symptoms are experienced as a result of stress, usually lasting a long time.

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