Thus, the differential diagnosis of early bullous pemphigoid is broad and includes conditions such as prurigo, urticaria, allergic contact dermatitis, arthropod reactions, pemphigus foliaceus, scabies, and vasculitis.
auricle. 1. the projecting part of the ear lying outside the head; called also pinna. Auricle. 2. the ear-shaped appendage of either atrium of the heart; formerly used to designate the entire atrium.(aw'ri-kl), [TA] Avoid the outmoded use of this word in the sense of atrium.uricle. 1. the projecting part of the ear lying outside the head; called also pinna. Auricle. 2. the ear-shaped appendage of either atrium of the heart; formerly used to designate the entire atrium.
For other uses, see Atrium. The atrium (plural: atria) is one of the two blood collection chambers of the heart. It was previously called the auricle, but that name is now used for an appendage of the atrium. The atrium is a chamber in which blood enters the heart, as opposed to the ventricle, where it is pushed out of the organ. It has a thin-walled structure that allows blood to return to the heart. There is at least one atrium in animals with a closed circulatory system.