In<unk> s (also known as brachyonychia, nail en<unk> te, and<unk>  thumb), the nail plate is flattened, the end of the thumb is widened and flattened, and the distal phalanx is abnormally short. In<unk> s, the width of the nail bed and nail plate is greater than their length. The condition is painless and asymptomatic.<unk> s usually occur on one or both thumbs, but may appear on all fingers and toes. It may be genetic, inherited as an autosomal-dominant trait, or acquired. Genetic disorders associated with<unk>  include Larsen syndrome, Brooke–Spiegler syndrome, Rubinstein–Taybi syndrome, Hajdu–Cheney syndrome, cartilage–hair hypoplasia, pycnodysostosis, acrodysostosis, and brachydactyly type D. Acquired<unk>  is associated with acroosteolysis and psoriatic arthropathy. Acquired<unk>  may also be diagnostic of bone resorption in hyperparathyroidism.<unk>  often presents with other nail conditions such as onycholysis, koilonychia, pachyonychia, Muehrcke's lines, leuconychia, and half-and-half nails. Cosmetic surgery can be used to improve the appearance of the nails.
Racquet nail
Pincer nail
Plummer's nail
Maddox wing
Trimegestone
Pigeon toe
Terry's nails
Muehrcke's nails