dear Latha, welcome to HCM.
what kind of a wound is it?>
cut/ crush/ discolored/ blackish? swollen?
painful or not? fever?
daibetic wounds heal poorly. if there is infection/ pus, it needs to be removed , plain saline/ betadine
may not work.
pl. show a surgeon before it gets worse. should not get gangrenous. try to keep sugars well controlled.
take care and pl. keep me posted on the progress.