The formation of an ulcer, which is an open sore or wound in the skin or mucous membrane that fails to heal normally. Ulceration involves the breakdown and loss of tissue, often extending below the surface.
From Latin 'ulcus' meaning 'sore' or 'wound,' related to the Greek 'helkos.' The term has been used in medicine since ancient times, with Hippocrates describing various types of ulcerative conditions.
Peptic ulcers were thought to be caused by stress and spicy food for decades until Barry Marshall literally infected himself with H. pylori bacteria in 1984 to prove bacterial infection was the real culprit - earning him a Nobel Prize!
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