Stress is never a "cause of eczema" but rather a trigger. Stress can be classified into two types, good and bad.
Good stress is the sort of stress that exhilarates and excites you. The type of stress that makes you want to get up in the morning and challenge the day.

Bad stress is never good. This type of stress is normally brought on by death, divorce, moving, financial worries or retrenchment. The type of curve balls that life throws at us that we could honestly do without, unfortunately that's life. Your ability to handle stress varies with each individual and as each persons pain threshold varies so does their ability to handle stress.

If stress continues over long periods a hormonal imbalance can occur leading to depression hence suicides. (This can be overcome with high doses of Omega 3, which will balance the ratio of AA/EPA in the brain). It's not as simple as that as stress also leads to poor dietary habits which result in a total breakdown of intestinal flora causing constipation or even severe colon disorders like Colitis, IBS and LGS. Colon disorders are normally the primary cause of eczema.

See the section on Digestive disorders