How Do You Tell the Difference Between a Blood Blister and Skin Cancer?

By Staff WriterLast Updated Apr 15, 2020 6:20:00 AM ET

Some melanomas in their earliest stages may resemble blood blisters and reveal themselves as such if they continue to grow rather than disappearing in a reasonable time frame, states Know Cancer. Patients should not wait too long to seek medical treatment, as nodular melanomas are particularly aggressive.