brachydactyly type A4 (MONDO_0007218, a Monarch Disease Ontology term) (BDA4) is a congenital malformation characterized by brachymesophalangy affecting mainly the 2nd and the 5th digit. Also known as: BDA4, Brachymesophalangy II and V, Temtamy type brachydactyly, brachydactyly, Temtamy type, brachymesophalangy II and V.