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What causes black discoloration of toe nail?

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Dermatologist
Practicing since : 2008
Answered : 2609 Questions
Question
why is big toe nail black"g
Posted Tue, 12 Aug 2014 in Skin Hair and Nails
 
 
Answered by Dr. Geetika Paul 17 minutes later
Brief Answer:
Can be infective, please provide pictures

Detailed Answer:
Hi

Pigmentation or black discoloration of toe nail can point towards various possible causes.
It can occur due to any trauma to nail leading to a small hemorrhage underneath the nail. It can be due to a toe nail infection like fungal or it can be due to other local and systemic causes.
I would like to have a look at the exact nail conditio n . Please click some close up pictures of the nail and upload them here on this page.
Also tell since when do you have this discoloration?
Is it only on a single nail?
Developed suddenly or slowly increasing?
Any pain or discomfort?
Is the surrounding skin normal? Any swelling of nail folds?

I am sure I will be able to help you more once you provide me the above details and the pictures .

Dr Geetika Paul
Above answer was peer-reviewed by
 
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