Abstract: A device for providing cooling to a body is disclosed. The device operates in response to a measured change in temperature of the body's skin surface over a predetermined period of time or manually in response to a perceived or anticipated change in body temperature by the user. The device includes a controller, a temperature sensor, a power source, a thermoelectric cooler, and a heat absorbing reservoir containing a phase change material. The thermoelectric cooler has a heat absorbing surface engageable with the body to be cooled and a heat rejecting surface engaged with the heat absorbing reservoir. The controller is operatively connected to the temperature sensor, the power source, and the thermoelectric cooler and activates the cooler when the temperature sensor provides signals indicative of a predetermined rate of temperature change or in manual mode by user. A method of treating hot flashes with the device is also disclosed.