Question: This concerns my big toe. The nail has a ridge in the middle that almost looks like a new nail pushing the old one out. Half of the nail looks thicker. What causes this and what can I do about it?
Dr. Hibberd's answer:
Nail thickening can occur from repeated trauma, poor circulation, fungal infection, or inflammatory disorders of the adjacent skin or nail bed. A single ridge in the nail may reflect recent trauma, but may also be seen with improper nail trimming, poor footwear or infection.
Nail growth patterns reflect the condition of foot circulation, hygiene, as well as some internal health disorders. Ridging from improper foot wear is easily remedied, but it would be wise for you to see your doctor for an evaluation.
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