Single bilateral interdigital flexion crease of the fifth finger in a phenotypically normal male

Different variants in the digital flexion creases are found in a number of syndromes, but rarely found in phenotypically normal individuals. We describe a case of a single interdigital flexion crease of the fifth finger present bilaterally in a phenotypically normal male. Influence of genetic factors and hand movements in utero on crease development is also discussed.