Irritant contact dermatitis (ICD) is a common inflammatory skin condition caused by direct cytotoxic effects of irritants on the epidermis. Topical corticosteroids, while effective for treating inflammatory dermatoses, may paradoxically induce adverse skin reactions when misused. This case highlights ICD triggered by self-administration of compound clobetasol propionate ointment, exacerbated by undiagnosed type 2 diabetes mellitus (T2DM).