I have what looks like a blood blister under my big toe on the outsdie of my foot. There is always a callous there and I felt a sharp pain last night on this side of my big toe and when I looked at it this morning it looks like it has completely bruised under this callous...I rubbed it to see if getting some of the dead skin off would help....then I started thinking ...what if it's the start gangrene....now im starting to get worried...
Female 39 61kgs....good health record