What are the symptoms of fleabitis my mothers ankles is red and swollen and hot to the touch...she also has some redness on her upper thigh

Symptoms : Symptoms from flea bites include small red bumps with a red halo around a small hole. This leads to significant itching. Thrombophlebitis symptoms can include pain in the body area where a blood clot has developed in a vein. The vein is tender and warm. There can also be redness and swelling of the part of the body effected. Wasn't exactly sure what you were dealing with, so included info on both.