A device (1) for diagnosing a disorder comprises a stop for stopping a human extremity (5), such as a finger, when said extremity exerts a force on the stop. Detection means are provided for detecting said exerted force. The device has a support member (20) for supporting the stop. The stop comprises one or more resilient strips (8,17), each of which projects from the support member up to in each case a free end. The resilient strips are arranged substantially parallel to and at a distance from one another. Each resilient strip can, by being deformed, contact an adjacent resilient strip.