A communication system comprises a wearable appliance (24) or a set of wearable appliances (24, 26) arranged for being worn by a first person (10), the wearable appliance or set comprising one or more cold applicators (18) for applying cold to the first person's body and one or more biosignal sensors (28, 30) for measuring biosignals indicative of physiological stress. The system also comprises a unit (36) monitoring the level of physiological stress experienced by the first person, the level of stress being deduced from the measured biosignals, and one or more mobile terminals (22) comprising each a human interface device with one or more output devices (40, 46, 50) for indicating the level of stress to a second person holding the mobile terminal and with one or more input devices (44, 50) for receiving input from that person. The system translates input received by the one or more mobile terminals into a control signal provided to the one or more cold applicators (18). 93199
