Irritants alike tobacco smoke, chemicals and solvents, even climate could exasperate eczema. Allergens besides - like dust mites, moulds, plant pollens, pets and any number of pollutants - could trigger off a eruption. It’s important to take notice of any allergies & sensitivities and avoid them.
Stress can also make eczema worse or trigger a flare. Unfortunately, the very fact that eczema and it’s itchiness can cause stress makes it that much more difficult to cope.