For people with atopic dermatitis, the most common form of eczema, the world is full of triggers. The list of flare-causing culprits ranges from bath and body products to cigarette smoke to laundry detergents to wool clothing, just to name a few. But some eczema triggers are not so obvious. While reasons for inflammation, itch, and pain will vary from person to person, be on the lookout for the following potential offenders. Fragrances and perfumes in cosmetics and personal-care products are notorious for causing skin reactions. But fragrances may also lurk in unexpected places, such as in candles and air fresheners. A viral infection like the common cold or flu can stoke systemic inflammation throughout the body, including on the skin, making viruses a common and often overlooked atopic dermatitis trigger. The herpes simplex virus (HSV), which can cause cold sores in and around the mouth, can also lead to atopic dermatitis flares. Allergic reactions to insect bites and beestings can provoke an atopic dermatitis flare. Cockroaches don’t bite people, but proximity to them can lead to a flare. Dust mites are microscopic, insect-like pests that feed on dead skin and live in bedding, mattresses, upholstered furniture, carpets, or curtains. Some people with atopic dermatitis have an allergic skin reaction to dust mites. Overwashing can lead to flares. Although thorough hand-washing can destroy bacteria that cause illnesses, too much can further break down the integrity of the skin barrier and lead to flares. Not all jewelry aggravates atopic dermatitis-prone skin, but rings, earrings, necklaces, and other body ornaments made of nickel can be problematic, especially if you have an allergy. Certain foods can cause atopic dermatitis to flare. Fabrics that trap heat or irritate the skin are well-established troublemakers when it comes to atopic dermatitis. Polyester, latex, wool, denim, rough linen, and leather can all worsen atopic dermatitis and other forms of skin inflammation, while fabrics made with pure cotton, silk, or bamboo tend to be more eczema-friendly. The pandemic introduced a new skin agitator: the face mask. To reduce the likelihood that a face mask will cause an eczema flare, cleanse the face with a gentle wash, pat skin dry, and apply moisturizer before putting on a mask; make sure the mask isn’t too tight or too loose; apply moisturizer again after taking off the mask; and wash a cloth face mask often to remove sweat, oils, skin cells, and germs.