what is the cause of lupus
Before we dive into what causes lupus, lets define the disease. There are four types of lupus: 1  Discoid lupus erythematosusâ This type affects the skin and is also known as cutaneous lupus. 2  Drug-induced lupus erythematosus-Drug-induced lupus can occur as a side effect of some drugs, such as beta blockers, which are commonly used to treat heart disease and hypertension.