Advice: Stay away from heat and heat treatments.

Fiction. On the contrary, some evidence indicates that heat therapy may reduce limb swelling. 

Contrary to what people who have undergone lymph node removal are commonly told, heat therapy may actually reduce the symptoms of lymphedema. One word of caution: Because the surgery experience can make skin more sensitive to heat for some people, you may want to avoid extreme heat, says Mehrara. But moderate heat, such as that of a hot tub, is fine.