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It can also be caused by polysyndactyly, which is characterized as one normal digit being connected/webbed to an extra digit (polydactyly). Polyonychia can also be acquired, such as after an accident that affected the nail bed causing it to split. This type of polyonychia is just referred to as "post-traumatic split nail" [3]
The accessory nail was first described in a 1969 paper by M. Hundeiker. [1] The trait can be observed on either one or both feet where there is a lengthwise separation of the toenail on the corner of smallest toe. The smaller sixth toenail separates from the main toenail on the outermost side of the foot, and protrudes outwards from the corner. [1]
Ingrown toe nail is a disorder where the nail starts to grow into the soft fleshy area of the toe. It causes intense redness, pain and swelling. Ingrown toe nails often affect the big toe. The best treatment for ingrown toe nails is to get the nail partially or completely removed. [6]
A case of fungal infection of the big toe Advanced fungal infection of the big toe. The most common symptom of a fungal nail infection is the nail becoming thickened and discoloured: white, black, yellow or green. As the infection progresses the nail can become brittle, with pieces breaking off or coming away from the toe or finger completely.
The exact cause of subungual melanomas is not known, but it doesn’t seem to be linked to sun exposure. ... Subungual melanomas tend to affect the big toe and thumb the most, but it can occur on ...
There are several causes of Beau's lines. It is believed that there is a temporary cessation of cell division in the nail matrix.This may be caused by an infection or problem in the nail fold, where the nail begins to form, or it may be caused by an injury to that area.
They often develop after puberty; increase in number over time; more frequently occur in the toenails than fingernails (the most common sites are on the big toe and thumb); are generally 5 to 10 mm in length but occasionally grow to far larger sizes; [4] and may be or become disfiguring, painful, and/or incapacitating. [13]
Nail bracing is more conservative than surgery, but less widely used. Nail braces work by gently lifting the sides of the toenail and eventually retraining the nail to grow to a flatter shape over time. The total time needed for the nail to be reshaped is one full nail growth or about 18 months. [12] There are two main types of nail braces ...