Now had digital ulcer under finger nail for 4 months, just will not heal. Had Iloprost in August and having another course in 3 weeks. Am now on Sildenafil 50 mg 3 times a day and Losartan 25 mg a day but no significant improvement either with ulcer or circulation. Am seeing vascular surgeon on 27th for possible debridement so hope he has a solution has anyone else had this problem ? Trying to keep warm now it is getting colder!