I have read through the posts on this website concerning strange looking nails, looked at melanoma pictures of toenails and am none the wiser.

My toenail discolouration (hallus - big toe) started with wearing woolly socks that rubbed on a long day's trek. That evening my toe started itching and within a week, a section of nail discoloured to beige and stripy. Within a month one side of it became brittle - displaying typical fungal infection signs. However, two sample tests through the nhs have been negative. Over a year, the condition spread from just a sliver on one side to covering about 3/4 of the nail. This summer I put some standard nail varnish on (not breathable variety). Recently I removed it, and to my surprise the whole nail has gone dark brown. I am wondering what to do!