I can't add much to what Hippiemom and Patty have already said.
AI diseases have an underlying cause of a genetic predisposition to them. Studies have shown that AI diseases run in families although different members get different diseases.
If you genetics predisposes you to a disruption of your immune system then something triggers it. Viruses, trauma, stress, drugs, and other things have been associated as triggers but the whole matter is not well understood. There is no question that leading a sensible, balanced, and healthy life will benefit anyone but it is debateable if it would prevent the onset of lupus or any other auto immune disease.
I am a good example of one who has tried to live a life in balance and had taken care of myself. Never sick for 62 years, fit, happy and very active. Endured much stress for a period of years due to my career and taking care of ailing parents. But there was no obvious trigger in my case.
So what triggered my disease which is mctd? Who knows? Obviously, I got a less than perfect set of genes.
Some day soon researchers will understand the mechanisms that trigger lupus and be able to predict, cure, and even prevent it but for now.....it is only a dream.
As for stress causing lupus. ....maybe. Some bodies are strengthened by it, others are not. Too much can break down any of us but is it really a trigger? Probably in some cases. Most people can deal with stress if their bodies were not susceptible to disruption.
Mixed connective tissue disease (systemic lupus, scleroderma, polymyositis), Raynauds phenomena, Hypertension, Barrett's esophagus.
Meds: prednisone (7mg & tapering), 100mg imuran, lisinopril 40mg, maxide 37.5/25mg, norvasc 5 mg, folic acid, potassium, aciphex 20mg, multi vitamins.
Maintain your optimism and you can beat the odds.
"Although the world is full of suffering, it is also full of the overcoming of it." Helen Keller