Hi,Dear Thanks for the query to HCM virtual Clinic. I studied your query with available details given in your query. I understood your health concerns. Treatment and Cause for the painful multiple lumps in arm vein- Cause of lumps -Your case is rightly assessed by your rheumatologist as Infectious,because there is clear cut history of finger infection. Don t blame your doctor who has referred to rheumatologist to rule out any other possibilities,as it persisted even after 1 week course of antibiotics. Don t worry and cool down and take IV antibiotics only under guidance from your doctor, though the lumps are painful. The lumps are of thrombophlebitis with clots at places and it would take another 10-15 days to reduce in intensity,due to extensive infection of the vein of the arm. So don t get panicky and take treatment as follows- Treatment - This needs to be taken under cover of your doctor as follows- Rest to the part with elevation on the pillows or Arm -sling Tab-Voltaren 1 /two times a day x 10 days with Tab Proton-D 1 at 6 pm. Thrombophobe oint loccally Serropetidase x for 10 days time for early recovery of the cellulitis and the lumps. So Don t worry.Its not cancerous but is thrombophlebitis with clots at places. This would help you to plan treatment with your doctor, whom you should plan your visit urgently , before it complicates any more. Don t Self-treat or medicate in your case as the case may go in to further complications. Hope this reply would resolve your query and would help you to plan treatment with your doctor. Hope this would relieve of your health concerns. Welcome for any further query in this regard before final suggestions are given in your query. Wishing you fast recovery.. Have a good day. Dr.Savaskar M.N. Senior Surgical Specialist.