The lesions sometimes increase size and spread over time and may not be complete rings but irregular shapes.

Distribution is usually on the thighs and legs but can also appear on the upper extremities, areas not exposed to sunlight, trunk or face.

However, it is sometimes linked to underlying diseases and conditions such as: A skin biopsy can be performed to test for EAC; tests should be performed to rule out other possible diseases such as: pityriasis rosea, tinea corporis, psoriasis, nummular eczema, atopic dermatitis, drug reaction, erythema migrans and other rashes.

It usually doesn't require treatment, but topical corticosteroids may be helpful[8] in reducing redness, swelling and itchiness.

[citation needed] Because of its rarity the documentation, cases and information are sparse and not a huge amount is known for certain, meaning that EAC could actually be a set of many un-classified skin lesions.