I apologize if this is a repeat. This is my first time on and I'm having trouble getting used to this. I am about 10 weeks post lumbar surgery. I had a three level fusion, was in the hospital for six days in the rehab hospital for seven days have had 12 treatments of in-home physical therapy. Currently I am waiting to go to my surgeon for my three months post surgery visit. Ever since I had surgery I have felt hot. I am usually not that way. I am usually cold more than hot however I have not slept with a blanket on me hardly at all since having surgery and it's in the middle of winter with below freezing weather. I will get hot and feel like my back is burning up and then I'll get cold. Mostly I stay warmer than cold. I've been searching and searching to try to find out if surgery has caused this. I am postmenopausal and have had my share of hot flashes in the past but they have not really bother me as much as these these are. I am also unable to sleep. I've been searching and finally found a forum that addresses this and wondered if what is happening is because of the surgery or what. Hopefully some of you can give me some advice.