Hi,Dear,Welcome with your query to HCM.
Studied your query in full depth of its details.Reviewed it in context of your health concerns.
Based On the facts, You mostly seem to suffer from-
Varicose Vein Lump in right calf,which is itchy and not a insect bite for sure.
Aching knee joint and large
bumpy rash indicates -
thrombophlebitis of the Varicose Vein Lump.
Treat-
Color doppler study of the let / and X-ray of the knee joint, would fix the cause of this lump in right calf.
Rest-/ Elevation / Veno-Stock / Thrombophobe oint locally /Tab Motrin would recover in 1 weeks time.
Planned EVLT-
EndoVenous Laser Treatment by foam pellets or springs to block the feeder veins would be the best treatment for your case.
Other causes need to be ruled out and treated if present accordingly from
Second opinion from Surgeon.
Hope that ,This reply would help you to plan further treatment soon with your treating doctors.Best of Luck and early recovery.
Welcome any further query in this regard,which would be replied in next
session.
Good Day!!
Dr.Savaskar M.N.
Senior Surgical Specialist