Since I was 15 I have suffered with chronic fatigue. I am now 39. Sometimes it is worse than others. Have had ultra sound on thyroid gland as well as test to see if thyroid was functioning properly. They say there is no problems with my thyroid. I have small lumps in my neck at the base of my throat & the sides of my neck which dr s have said are on my glands but no cause & they aren t concerned as they havent grown in the past 10 years. I have tried herbal things with no luck. I feel tired constantly no matter how good I sleep, eat, etc. It can be sometimes 6 months or a couple years when I get hit with really bad fatigue. When its like that I fall asleep if I sit down for more than 5 minutes & have no energy. I have had rapid weight loss (30 lbs in a week). I have also had rapid weight gain when this happens. I am 5ft 6 in tall & 145 lbs when things are normal. Within a week I can drop to 110 lbs or can go up to 180 lbs. I am not depressed. I am healthy & active. Just want an idea of what is causing me to feel so tired all the time.