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.
(2). The infestation causes a condition known as demodicosis or mite bite, characterised by itching, inflammation and other skin disorders. The insects under the skin feeling is known as formication. 1  Rosacea. 2  Blepharitis (inflammation of the edge of eyelids). 3  Large pores. 4  Dilated veins. 5  Redness. 6  Thin hair.