What Causes Bed Pores Under The Feet And Knee In A Filariasis Patient?

My Mother is 60 years old. She is suffering from filariasis since last 25 years. Previously only feet was affected. Now from her knee down it s sowllen. Now a days she is getting wounds like bed pores under her feet and on her knee. She had visited a cosmetic suregeon who had advised her for some medicdine for 6 months and then surgery to bring her leg to look normal. She is suffering from difficulty in walking and doing homeworks. Can you advise me for further course of action and if any treament there to normalize her leg swellings.