A method for assessing sudomotor function of a patient for evaluating diabetic and autonomous neuropathy is disclosed. The method is performed in a system comprising electrodes intended to be placed on different regions of the patient body, and an adjustable DC source. The method includes applying on the electrodes DC voltage pulses of varying voltage values in order to stress sweat glands, the voltage pulses lasting given durations allowing the stabilization of electrochemical phenomena in the body, near the electrodes collecting data representative of the current between the electrodes, and of the potential generated on the electrodes for the different DC voltages from the data, computing results representative of the electrochemical skin conductance of the patient reconciling the latter data with reference data obtained in the same conditions on patients identified as suffering or not from sudomotor, and identifying the patient as suffering or not from sudomotor dysfunction.
