Does stress cause alopecia areata?

Hello Hairloss expert doctors. Does stress cause or trigger alopecia areata as well? I keep getting mixed results when I read online regarding stress and alopecia areata. And if it does, is it regular emotional stress or severe stress that causes nutritional deficiencies or major illnesses to trigger the autoimmune condition? Let's say someone has anxiety and emotional stress but there nutrition is well maintained and healthy overall, can that emotional stress trigger it still? Thank you