A system for clinical vibration sensitivity assessment comprising: a device (10; 40; 50; 60; 76; 80; 100; 110) comprising: an attachment portion (42; 52; 62; 86; 104; 112) configured to detachably clip the device onto a mobile telephone, wherein an internal shape of the attachment portion is configured closely to match an external shape of the mobile telephone; and a probe (44; 54; 64; 74; 84) configured to be applied to a test location on a test subject's skin and to convey vibrations generated by the mobile telephone to the test location; and the mobile telephone (20; 102; 116, 126), wherein the mobile telephone is configured to carry out a vibration sensitivity assessment procedure comprising: generating a predetermined intensity of the vibrations; and receiving user input indicating the test subject's ability to feel the predetermined intensity of vibrations at the test location, wherein the mobile telephone is configured to carry out the vibration sensitivity assessment procedure in iterative steps comprising: performing the generating and receiving steps; increasing the predetermined intensity of the vibrations; and repeating the generating and receiving steps, wherein the mobile telephone is configured to set the intensity of the vibrations in dependence on a selected test location on the test subject's skin. a device (10; 40; 50; 60; 76; 80; 100; 110) comprising: an attachment portion (42; 52; 62; 86; 104; 112) configured to detachably clip the device onto a mobile telephone, wherein an internal shape of the attachment portion is configured closely to match an external shape of the mobile telephone; and a probe (44; 54; 64; 74; 84) configured to be applied to a test location on a test subject's skin and to convey vibrations generated by the mobile telephone to the test location; and an attachment portion (42; 52; 62; 86; 104; 112) configured to detachably clip the device onto a mobile telephone, wherein an internal shape of the attachment portion is configured closely to match an external shape of the mobile telephone; and a probe (44; 54; 64; 74; 84) configured to be applied to a test location on a test subject's skin and to convey vibrations generated by the mobile telephone to the test location; and the mobile telephone (20; 102; 116, 126), wherein the mobile telephone is configured to carry out a vibration sensitivity assessment procedure comprising: generating a predetermined intensity of the vibrations; and receiving user input indicating the test subject's ability to feel the predetermined intensity of vibrations at the test location, wherein the mobile telephone is configured to carry out the vibration sensitivity assessment procedure in iterative steps comprising: performing the generating and receiving steps; increasing the predetermined intensity of the vibrations; and repeating the generating and receiving steps, wherein the mobile telephone is configured to set the intensity of the vibrations in dependence on a selected test location on the test subject's skin. generating a predetermined intensity of the vibrations; and receiving user input indicating the test subject's ability to feel the predetermined intensity of vibrations at the test location, wherein the mobile telephone is configured to carry out the vibration sensitivity assessment procedure in iterative steps comprising: performing the generating and receiving steps; increasing the predetermined intensity of the vibrations; and repeating the generating and receiving steps, wherein the mobile telephone is configured to set the intensity of the vibrations in dependence on a selected test location on the test subject's skin. performing the generating and receiving steps; increasing the predetermined intensity of the vibrations; and repeating the generating and receiving steps, wherein the mobile telephone is configured to set the intensity of the vibrations in dependence on a selected test location on the test subject's skin.