Skin Care Blog

habit tic deformity treatment
What Causes Thumbnail Ridging?

By Cynthia Bailey MD

The most common cause of those funny ridges down the middle of thumbnails is surprising – and it’s reversible. The ridging, also called habit-tic deformity, is caused by flicking the nail and adjacent cuticl...

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what causes weak splitting nails
What causes weak, splitting nails?

By Cynthia Bailey MD

Splitting nails are common. Soft, weak nails that split down the middle, on the sides or just peel in layers are unfortunately a problem. About 20% of people suffer from brittle nails, especially women over ...

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