? biopsy: If I understand correctly, there is a brown mark on the sole of your feet, and you want to know if a biopsy is needed. It depends on the size and appearance of the brown area. Sometimes, bruises or a fungal infection can cause brownish discoloration that does not require biopsy. If it is concerning to you, a doctor should check this to let you know if a biopsy is warranted.
Answered 9/28/2016
3.8k views
3 doctors weighed in across 2 answers
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
6 doctors weighed in across 3 answers
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question