A TENS Unit is one of several kinds of electrotherapy devices that use very small doses of electric current to promote natural pain relief. The word TENS, sometimes abbreviated as T.E.N.S., stands for Transcutaneous Electrical Nerve Stimulator.
What causes lack of appetite. A lack of appetite can be due to a variety of reasons. One reason for losing your appetite could be the side effects of a medication that you are on. It could also be the result of emotional causes such as stress, anxiety, or depression.
Summary. 1  Loss of appetite can cause fatigue due to low calorie intake and nutrient deficiency. 2  Fatigue means being constantly tired. 3  It may be a sign of an underlying health condition if youâre feeling fatigue, loss of appetite, and other symptoms such as vomiting and bloating.