Noninfective cause of genital ulcer is -
Bechet's disease is characterized by a triad of recurrent oral ulcers (aphthous ulcers), recurrent genital ulcers and uveitis.
Important non-infective causes of genital ulcer are Trauma, Bechet's disease, Stevens-Johnson syndrome and carcinoma.
Behcets disease
Hansen's disease
Ramsons's disease
Syphilis