According to the author's data among 23 patients an etiological factor of the Mondor disease was trauma in 19 cases and infection -- in 4. A complete cure was gained in 2 weeks if a patient addressed for medical help during the period of thrombformation, whereas in the second stage -- in 3--4 weeks. A recurrence of the disease in a form of fibrous bands was observed among these patients in 3.2%. The treatment is accomplished under out-patient conditions.