Behçet’s disease, or Behçet’s syndrome, is a rare and poorly understood condition that results in inflammation of the blood vessels and tissues.

Confirming a diagnosis of Behçet’s disease can be difficult because the symptoms are so wide-ranging and general (they can be shared with a number of other conditions).

The cause of Behçet’s disease is unknown, although most experts believe it’s an autoinflammatory condition.

An autoinflammatory condition is where the immune system – the body’s natural defence against infection and illness – mistakenly attacks healthy tissue.