Waugh that does not heal is termed as ______?

Waugh that does not heal is termed as ______?

واہ جو شفا نہیں کرتا اسے ______ کہا جاتا ہے؟
Explanation

An ulcer is a wound that fails to heal and often becomes chronic.

Unlike contaminated or infected wounds, ulcers persist over time with tissue loss.