What shape does the heated area surrounding the high frequency needle resemble?

The heated area surrounding the high-frequency needle resembles a teardrop or pear shape due to the way heat is distributed during the application of high-frequency energy. When the needle is applied to the skin, the energy causes a localized increase in temperature around the point of contact. The distribution of heat is typically more intense at the tip of the needle and gradually decreases as you move away from it, creating a shape that is broader at the base where the needle contacts the skin and tapered towards the tip. This tapering effect resembles a teardrop or pear shape, as it reflects the gradient of heat distribution and its effective reach within the tissue, highlighting the importance of understanding thermal dynamics in electrolysis and laser treatments.