Green-black nails can be caused by overgrowth of bacteria called pseudomonas, particularly under loose nails. Richard Eby, DPM. Master Contributor 70.
If your fingernails curve inwards like spoons koilonychia , you may have one of the following disorders:. Sometimes, brittle or crumbly nails can be caused by: Podiatrist in Dacula, GA.
A narrow, vertical black line on your nail is called a splinter hemorrhage. They may occur as a result of:.
Because fingernail ridges are usually signs of other health problems, treatment is focused on the underlying cause of the changes to your nails. Helman, DPM. Thornhill, DPM.
Fingernails are made by living skin cells in your fingers. Contributor 10. Your doctor may order urine and blood tests if they suspect kidney disease, diabetes, or nutritional deficiencies.
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Podiatrist in Mississauga, ON. Another common cause of a loose nail is over-manicuring the nails and cleaning underneath them with a sharp object. The affected nail folds are swollen. Most of the time, ridges in fingernails are normal signs of aging. Previous Page 1 2 Next Page. Vertical ridges are furrows that run from the tip of your fingernail down to the cuticle.