A medical treatment device and method provide relief from symptoms of peripheral neuropathy and/or vascular dysfunction. The device provides pressure along an inner surface of a human limb of a user, so that at least a portion of the pressure is derived from the weight of the user seated atop the device, and includes a frame for providing support of the device on a floor and one or more curved extensions extending above a center of the frame and downward toward the floor and configured to contact the inner surface of the limb of the user so that weight of the limb supplies at least some of the pressure. The treatment method includes seating a patient atop the device and maintaining the pressure for a treatment interval to provide relief from the symptoms of the peripheral neuropathy and/or vascular dysfunction.