Both are skin diseases and also viral in nature. They form skin contagious skin blisters. But measles is an generally respiratory system infection and chicken pox occurs due to weakened immune system. Measles may also cause encephalitis, ear infection, dehydration and severe respiratory infections in severe cases. Apart from skin blisters, fever, cough chicken pox also may reemerge due to compromised immune system. Solution Both are skin diseases and also viral in nature. They form skin contagious skin blisters. But measles is an generally respiratory system infection and chicken pox occurs due to weakened immune system. Measles may also cause encephalitis, ear infection, dehydration and severe respiratory infections in severe cases. Apart from skin blisters, fever, cough chicken pox also may reemerge due to compromised immune system..