Sarcoidosis

Also called Sarcoid

Sarcoidosis is a rare condition that causes small patches of red and swollen tissue, called granulomas, to develop in organs of the body. It usually affects the lungs and skin, but can also affect the eyes, heart, nerves and other organs. It usually starts between ages 20 and 60. The cause is not known.

Last updated Nov 9, 2026

What it is

It often gets better without treatment within a few years. Some people have long-term symptoms.

If treatment is needed, steroids and other medicines that calm the immune system are used. Regular checks of the lungs, eyes and heart may be advised.

Common signs

  • A persistent dry cough
  • Shortness of breath
  • Tiredness
  • Tender red bumps on the shins
  • Swollen glands
  • Red, sore eyes

How it is usually diagnosed

  • Chest X-ray or CT scan
  • Blood tests
  • Lung function tests
  • A biopsy

Records worth keeping

Keeping these together makes each appointment easier, especially when you see a new doctor:

  • Chest X-ray and CT reports
  • Lung function results
  • Biopsy reports
  • Respiratory or specialist letters

Questions to ask your doctor

  • Which organs are affected?
  • Do I need treatment now?
  • Which checks will I need, for example of my eyes or heart?

When to get help right away

Call 112 or go to the nearest emergency department if you have:

  • Palpitations, fainting, chest pain or a sudden change in vision: get urgent help, call 112

This page is general information. It is not a diagnosis and does not replace a doctor who knows your history. Medfold keeps your records organised; it does not interpret them.

Sources