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Eczema/AD can be asymmetrical, while perioral dermatitis is typically symmetrical.Blood tests for Ig E levels can be helpful to determine if it is eczema/AD.: When perioral dermatitis affects the chin and the skin next to the nose, it often looks like acne at first appearance.But you can tell that it is not acne by noticing there are no comedones (blackheads or whiteheads).The etiology and pathogenesis is unknown according to western biomedicine.The rash of perioral dermatitis is rather distinct though it can often be misdiagnosed as eczema (atopic dermatitis), acne, allergic contact dermatitis, or even rosacea.But not all rashes near the mouth or on the face are caused by allergic contact dermatitis.
Most of the time the rash will be symmetrical – appearing on both sides of the face.: It can be challenging to differentiate perioral dermatitis from eczema/AD at first glance.Eczema will often appear elsewhere on the face or the body and not be confined to the region around the mouth or eyes.Persons with oily skin who do not properly cleanse with water and soap (or other cleanser) are also susceptible.Daily use of heavy sunscreens also tend to trigger this type of rash.
Eruptions typically begin around the mouth (perioral region) in the nasolabial folds (smile lines) and can spread to the sides of the nose (perinasal region), the chin, the cheeks, or even the lateral aspect of the lower eyelid (periorbital region).