The biological process of becoming sensitive to a particular substance; adverse reactions to a chemical resulting from previous exposure to that chemical or one of a similar type or structure.
Onychatrophia is a wasting away of the nails that is generally permanent.
Lichen planus is an inflammatory skin condition that can affect the nails as well as most other parts of the body.
Paronychia is an infection that occurs when there is breakdown in the seal between the skin and the nail plate.
Common but painful, ingrown nails are often the result of poor care — and infection may follow.
Beau’s lines are ridged or grooved lines that run horizontally across the nail.
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