<s>[INST] Hi My mother who is 80 does sit lot,when sitting her legs turn red from the feet up and are swell up also..With the redness she has pain..What I would like to know if this is caused by the heart..She does have heart problems..Just about to forget she also has heat with the redness and shinny legs. Sorry to take up your time I thought this was free..Can t afford 15.00..Thanks anyway [/INST] Hi your mothers condition is caused most probably by weak heart pumping action which leads to accumulation of fluid in the legs and feet. This part is below the heart and gravity contributes to this also. In addition, she may be having a partial block of the veins which take the blood away from the legs.  She sits a lot which is not good and should walk around and use elastic stockings which help this to some extent. Another important thing is a check-up by your doctor to see if the veins affected are the deep ones or those near the skin. Medication will be needed for this. Keep the legs elevated while sitting, and she may do ankle foot exercises to aid in pumping of the blood. You are most welcome and hope this is useful for your mother. Please take this advice free </s>