### Human:\nmy 55 yr. old brother has both legs below the knee to toes unusually red swollen warm painfull useless after 20 steps.\n\n### Assistant: you should get medical attention for your brother as soon as possible. these symptoms could relate to a variety of ailments and only a health care professional doing a physical examination can give you a diagnosis. any time a person's symptoms get worse or change suddenly it's worth a trip to the doctor's office. in your brother's case this is especially true because his symptoms are causing him to be unable to walk. i don't want to alarm you but i urge you to seek medical attention for your brother as soon as possible. best wishes to you both!