What other health conditions are linked to endometriosis?

Research shows a link between endometriosis and other health problems in women and their families. Some of these include:

Allergies, asthma, and chemical sensitivities
Autoimmune diseases, in which the body's system that fights illness attacks itself instead. These can include multiple sclerosis, lupus, and some types of hypothyroidism.
Chronic fatigue syndrome and fibromyalgia
Certain cancers, such as ovarian and breast cancer