An old borderline-lepromatous leprosy patient, treated initially with
DDS monotherapy followed by MDT, 11 years later during surveillance pr
esented with 3-month-old asymptomatic cystic swelling, arising from th
e right ulnar nerve without exhibiting any evidence to document relaps
e of the disease. It responded promptly to corticosteroid therapy. Thi
s unusual clinical presentations of ulnar nerve abscess has not been r
eported elsewhere.