Bruising: These lines usually are caused due to traumatized nail beds causing internal bleeding in the nails. It can also come from improperly fitting shoes and taking anticoagulants, like aspirin.
Answered 2/20/2015
3.3k views
May be due to: trauma/ pressure on nails causing small hemorrhages.
Answered 11/1/2018
255 views
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A doctor has provided 1 answer
3 doctors weighed in across 2 answers
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