The exact cause of autoimmune conditions such as systematic lupus erythematosus (SLE) is unknown. It is thought that some people are genetically predisposed to developing the condition and that it can be triggered by an event, illness or environmental influence.
Although genetics may play a part in the development of SLE and studies have shown that it can run in families, it doesn’t mean that if you have a parent or sibling with SLE that you will necessarily develop it.
Triggers of SLE may include:
- Prolonged use of some medicines
- Exposure to sunlight
- Hormonal changes