For other uses, see Osmosis (disambiguation). Osmosis is the spontaneous net movement of solvent molecules through a semi-permeable membrane into a region of higher solute concentration, in the direction that tends to equalize the solute concentrations on the two sides.
Hand, Foot, and Mouth Disease Symptoms & Signs. The symptoms of hand, foot, and mouth disease are typically mild and occur mainly in children during the spring and fall seasons. Symptoms can include fever, malaise, decreased appetite, and sore throat. A rash is characteristic of this viral disease. The rash of hand, foot, and mouth disease is most commonly observed on the palms, soles of the feet, and inside the mouth. The rash sometimes spreads to the lower calves and buttocks.
Children with hand-foot-mouth disease usually start to feel crummy 3 to 7 days after they were exposed. Often, the first thing parents notice is their childrenâs decreased appetite for solids. Children may also have a fever and a sore throat. A day or two later, many children develop sores in the mouth.and-foot-mouth disease is usually caused by a virus called coxsackievirus A16. However, many children with coxsackievirus A16 infections do not have all of the features of hand-foot-mouth disease. Some have no rash, some have no mouth sores, and some even have no fever.