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.
A simple discussion of these causes with additional information is below. Causes of Skin burning sensation: The following medical conditions are some of the possible causes of Skin burning sensation. There are likely to be other possible causes, so ask your doctor about your symptoms. Smoking; Scleroderma; Systemic lupus erythematosus; Dermatomyositis