Background: Thalidomide is used for the symptomatic treatment of recur
rent aphthous stomatitis (RAS), Some authors reported remissions, but
this was not evaluated. Objective: To evaluate the number of patients
who could stop or reduce thalidomide treatment. Methods: Twenty-five p
atients with RAS treated with thalidomide and followed during at least
1 year were retrospectively studied, Results: Six patients could stop
the treatment and further presented minor aphthae, 10 needed minimal
daily doses of thalidomide and 7 did not respond to 100 mg daily, One
patient was not evaluated because of an early side effect and one was
lost to follow-up, Conclusion: This study showed that a minority of pa
tients responded and could stop thalidomide therapy whereas: another g
roup of patients could be maintained in remission with low doses of th
alidomide which may represent a means to reduce the potentially severe
side effects.