In mechanics, a force is that which causes a change in velocity or, if you prefer, that which causes an acceleration. When more than one force acts on an object it is the net force that is important. Since force is a vector quantity, use geometry instead of arithmetic when combining forces.
Quick Answer. A crawling sensation felt on the skin may be caused by a condition called morgellons, according to WebMD. Common symptoms of morgellons include feeling like bugs are crawling on the skin, burning, itching and stinging sensations. In some cases skin sores may appear as well.
Causes of Burning Sensations in Skin. When you experience anxiety, your body is in fight or flight mode. That causes a rush of adrenaline as your body prepares for action.. Adrenaline affects people in different ways. Some people experience more of a weakness or a tingling.