 [ Symptoms ] what causes swelling in one ankle and lower leg in 93 year old woman and what specialist should she see  the 93 yr old women is in good health and only take vitamins no prescriptions she has been told she is in the middle of alzheimer is disease her left leg below the knee swells everyday without pain she also has a sore with scab the size of a quarter on this leg what causes this and what specialist should she see [ Disease ] i am sorry to hear this elderly lady is going through this she otherwise sounds like she is in very good shape i suggest you start with a trip to her primary care provider that is usually the best starting point because the pcp has all of this lady is health history and can get her on the path to see the correct specialist if necessary of course it is impossible to say what is causing this leg swelling without doing a physical examination if i had to guess i would say it is probably some sort of venous stasis problem this could also be the reason for the small ulcer on her leg venous stasis problems in which blood pools in the legs is very common in older adults it is important to get this lady in to see her pcp as soon as possible those little leg ulcers can blow up into ugly sores rather quickly so it would be wise to have it looked at hope this helps