What is "tropical ulcer"

Aden ulcer \A"den ul"cer\ [So named after Aden, a seaport in Southern Arabia, where it occurs.] (Med.) A disease endemic in various parts of tropical Asia, due to a specific micro["o]rganism which produces chronic ulcers on the limbs. It is often fatal. Called also Cochin China ulcer, Persian ulcer, tropical ulcer, etc. [Webster 1913 Suppl.] ||

Tropical ulcer (also known as Aden ulcer, Jungle rot, Malabar ulcer, and Tropical phagedena) is a chronic ulcerative skin lesion thought to be caused by polymicrobial infection with a variety of microorganisms, including mycobacteria. It is common in tropical climates.

Ulcers occur on exposed parts of the body, primarily on anterolateral aspect of the lower limbs and may erode muscles and tendons, and sometimes, the bones. These lesions may frequently develop on preexisting abrasions or sores sometimes beginning from a mere scratch.