This leads to dry and brittle nails that can split easily. Stress also affects how well nails heal after being damaged. Stress can cause nails to split in several ways. According to a study ...

or small indentations on your nail surface, is not generally a symptom of onychorrhexis. Onychorrhexis mainly causes vertical ridges and splitting of the nails. Nail pitting is more common with ...

Nail psoriasis can cause nails to split, lift away from the nail bed, and lead to itching and thickening. As much as 80% of people with psoriasis have it on their nails. In addition to a black ...

You may have splinter hemorrhages if you have dark, vertical lines under your nails that look like splinters. The most common cause is trauma to the nail. Splinter hemorrhages can also happen due ...

Depending on the cause, you may notice other nail changes that occur with a black line on a nail, such as: Changes in the ...