Onycholysis: This separation disturbance is also called “plummer nails”. The way that this disturbance happens is by blood separating the nail from its bed when hit or injured. This particular process might result in nail discoloration.
Clubbing: this is a nail deformity that is caused by thickening of the proximal tissue under nail which causes the nail to shape itself as if it was rounded towards the tip of the nail, making an appreance of a rounded nail.
Koilonychias: This is a disorder in which the nail appears to be shaped with a depression rather than a radius. This actual nail state can correct itself with time but doesn’t always result in a normal nail shape. This is cause because of the nail patella which contorts the nails form during the nails process of growing.
http://www.google.com/imgres?q=onycholysis&hl=en&gbv=2&biw=1366&bih=574&tbm=isch&tbnid=w8-gluCI3qVcdM:&imgrefurl=http://www.healthsci.jmu.edu/common/Knitter/Graphics/dermatology/&docid=N51V8kBRVVV2aM&imgurl=http://www.healthsci.jmu.edu/common/Knitter/Graphics/dermatology/Onycholysis%252520TCN.jpg&w=600&h=471&ei=es6cTq6RNIaUiAL2xND1CQ&zoom=1&iact=rc&dur=178&sig=116936205452691783240&page=1&tbnh=112&tbnw=158&start=0&ndsp=12&ved=1t:429,r:6,s:0&tx=56&ty=60
http://www.surgicalnotes.co.uk/content/finger-digital-clubbing
http://www.picturesdepot.com/medical/18751/koilonychia.htmlhttp://www.aafp.org/afp/2004/0315/p1417.html
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