The invention relates to a device (1) for dermatological treatment, comprising a laser head (2) suitable for directing a laser beam (3) towards a target zone (4), at least one fan (5) suitable for dissipating the heat emitted by the laser head (2), and at least one monitoring means (6) suitable for detecting a fault in at least one fan (5) and for controlling at least one means (7) for inhibiting the laser beam (3) when a fault is detected.
