Sarcoidosis living

Overview

Sarcoidosis is a condition where tiny clumps of inflammatory cells, called granulomas, form in parts of the body, most often the lungs and lymph nodes. It is not cancer and it is not contagious. For many people, sarcoidosis gets better on its own or with treatment.

Sarcoidosis is not very common. It is thought to affect around 1 in 10,000 people in the UK, but rates vary around the world. Some people have very mild disease that is only found by chance.

Sarcoidosis usually affects adults under 50, and it is more common in women than men. It can occur in any ethnic group, but it is more frequent and often more severe in people of African and Caribbean descent, and also in people of Scandinavian, Irish, and German heritage.

Symptoms

Common symptoms

• A dry, persistent cough
• Shortness of breath, especially with activity
• Feeling very tired or weak
• Painful or swollen joints, often in the ankles or knees
• Red, watery, or painful eyes
• Skin changes, such as reddish bumps or patches, usually on the shins or face
• Swollen lymph nodes, often in the neck, armpits, or groin
• Night sweats or unexplained weight loss

Symptoms in children

• Sarcoidosis is rare in children, but when it happens, symptoms may include fatigue, low energy, poor appetite, skin rashes, joint pain, and cough.
• Children may also have fever and weight loss, and it can affect growth if not managed.
• Symptoms can be similar to other childhood illnesses, so it needs a careful medical assessment.

Symptoms in older adults

• In older adults, sarcoidosis may be harder to spot because symptoms like fatigue, cough, and joint pain can be mistaken for other age-related conditions.
• It may also be found by chance when a chest X-ray is done for another reason.
• The outlook in older adults is often good, but it can cause more persistent symptoms in some people.

Causes

Main causes

• The exact cause of sarcoidosis is not known. It is thought to happen when the immune system overreacts to an unknown trigger, such as a virus, bacteria, or environmental substance.
• The overactive immune response causes clusters of inflammatory cells to form in tissues.
• Sarcoidosis is not inherited directly, but having a family member with it can slightly increase the chance of developing it.

Risk factors

• Being aged between 20 and 60 years.
• Being female.
• Having certain genetic backgrounds, particularly African or Caribbean ancestry, or Northern European ancestry.
• Exposure to certain environmental factors, such as mold, dust, or chemicals, may play a role, but this is not proven.
• Having a first-degree relative with sarcoidosis.

When to see a doctor

See a doctor urgently if:

• If you have sudden or severe breathing trouble, chest pain, cough up blood, or lose your vision, call your local emergency number immediately.
• If you have new eye pain, significant shortness of breath, or a very painful swollen joint, seek care the same day.

Book a routine appointment if:

• If you have a cough that lasts more than three weeks.
• If you feel unusually tired for no clear reason.
• If you have persistent joint aches, skin rashes, or swollen lymph nodes.
• If you have had sarcoidosis before and your symptoms are returning or getting worse.

Diagnosis

Doctors diagnose sarcoidosis by combining your symptoms, a physical exam, and tests. There is no single test for sarcoidosis. Your doctor may also rule out other conditions that can cause similar symptoms.

Tests that may be done

• Chest X-ray, which can show enlarged lymph nodes or changes in the lungs.
• CT scan of the chest for a more detailed image.
• Breathing tests (lung function tests) to check how well your lungs work.
• Blood tests to look for signs of inflammation and to check liver and kidney function.
• A biopsy, which takes a small sample of tissue from an affected area, such as the lung, skin, or lymph node, to look for granulomas.
• An eye examination by an optometrist or ophthalmologist, because sarcoidosis can affect the eyes.

What to expect at your appointment

Diagnosis may take time and often involves seeing a specialist, such as a respiratory doctor or a rheumatologist. You may need several appointments and tests. It is natural to feel a little anxious, but knowing exactly what is going on can help you and your doctor plan the next steps.

Treatment

Treatment for sarcoidosis depends on whether your symptoms are mild or severe, which organs are affected, and whether there is risk of permanent damage. Many people do not need treatment because the condition resolves on its own. When treatment is needed, the goal is to control inflammation, relieve symptoms, and protect the organs.

Self-care at home

• Listen to your body and rest when you feel tired.
• If you smoke, ask your healthcare team for support to quit.
• Protect your skin from the sun if you have skin changes.
• Keep follow-up appointments so any changes are caught early.
• Do not stop any prescribed treatment without talking to your doctor.

Medical treatments

If treatment is required, doctors may prescribe medicines that reduce inflammation and calm the immune system. Common approaches include corticosteroid tablets, which are used for short or longer periods, and other immune-suppressing medicines for people who do not improve. Sometimes medicines are given as inhalers for lung symptoms, creams for skin patches, or eyedrops for eye inflammation. Your doctor will discuss the benefits and risks of any treatment with you.

When is surgery considered?

Surgery is rarely needed for sarcoidosis. In a very small number of people, complications such as serious heart rhythm problems, fluid around the heart, or lung damage may require a procedure or surgery. Your specialist will only consider this if other treatments are not enough.

Living with this condition

Living with sarcoidosis can be challenging, especially when fatigue is a big part of the condition. Pace yourself, prioritise what is most important, and do not feel guilty about needing rest. Many people find that their symptoms come and go, so it helps to plan around good and bad days.

Lifestyle tips

• Build rest into your day, not just at night.
• Stay as active as you can, but avoid overdoing it on high-energy days.
• Eat a healthy, balanced diet to support your overall health.
• Manage stress with relaxation techniques, gentle activities, or hobbies you enjoy.
• Stay in regular contact with your healthcare team, especially if symptoms change.

Diet and exercise

There is no special diet that cures sarcoidosis, but eating a balanced diet with plenty of vegetables, fruit, whole grains, and lean protein can support your immune system and energy levels. Gentle exercise such as walking, swimming, or yoga can help maintain lung function, muscle strength, and mood. Always start slowly and check with your doctor before increasing activity levels.

Mental health and emotional wellbeing

Living with a long-term condition can affect your mental health. You may feel anxious, low, or frustrated, especially when symptoms are unpredictable. These feelings are normal. Talk to your healthcare team if you are struggling, because support is available. If you are having thoughts of self-harm, please contact a crisis service in your area or call your local emergency number immediately.

Prevention

Sarcoidosis cannot be prevented, because the exact cause is not known. You can reduce the risk of symptoms getting worse by staying healthy, avoiding smoking, and attending regular check-ups. Early recognition and treatment can help prevent complications.

Vaccines

Keep your vaccines up to date as recommended by your doctor. Vaccines do not prevent sarcoidosis itself, but they help prevent infections that could make your lungs or immune system work harder.

Screening programmes

There is no routine screening for sarcoidosis in the general population. If you have a family member with the condition and you develop symptoms, it is best to see a doctor for an assessment.

Complications

If left untreated

• Ongoing inflammation in the lungs can lead to scarring (pulmonary fibrosis) and permanent breathing problems.
• Eye inflammation that is not treated can cause vision loss or cataracts.
• Kidney involvement can lead to kidney stones or damage to kidney function.
• In some cases, the heart can be affected, which may cause abnormal heart rhythms or heart failure.
• Constant fatigue and other symptoms can affect work, relationships, and quality of life.

Long-term outlook

The outlook for sarcoidosis is generally positive. Many people improve on their own within a few years, and most who need treatment do well. Some people have a more chronic course, but with good medical care and a healthy lifestyle, most can manage their symptoms and maintain a good quality of life. You are not alone, and there are treatments and support to help you.

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