Hi Dear !! Thanks for your query to HCM . Read and reviewed your query and health concerns. My opinion- IN the given situation, You seems to be having-Varicose Veins with Failed perforator veins near foot- which needs to be checked physically and investigated and confirmed by your family Physician. Dear, You seem to be having undetected long standing Varicose Veins which recently got popped up at the failed perforator vein above foot. The spread to wider point indicates subcutaneous vein leakage,due to engorged superficial veins drained by the failed perforator veins. Or this could be CCCS-(Chroic Compartment Compression Syndrome of legs) from long walk lately. Dear the possibility of it being autoimmune vasculitis is not there as it is very possibility, but being lichen planus, it needs to be ruled out. Do s Suggested- GetUSG with Doppler Study of BOTH LEG VEINS would fix the cause of this sudden leg problem in your case. Consult General Surgeon who would investigate and send you to Vascular Vein Surgeon-to Correct this perforator and long / short saphenous vein defect. Using Venostockings would protect your defective veins in legs. Other causes of sudden leg vein problem,needs to be verified and ruled out, before giving any treatment. Hope this would help you to plan further of this complex illness of yours. If need be, update any health issue 24 x 7 by a direct question to ME, at following HCM link-http://doctor.healthcaremagic.com/Funnel?page=askDoctorDirectly&docId=70229 Dear, if satisfied,Don t forget to close this query with YOUR pleasing feedback comments to rate this reply and service, to boost the morale of incoming Emergency patients like YOU, at HCM services. If you want to update more details and ask more update queries , You are most Welcome herewith !! Good Day!! Wishing Good Healthy Life in time to come!! Dr.Savaskar M.N. Senior Surgical Specialist M.S.Genl-CVTS