atypical measles syndrome

atypical measles syndrome The modified expression of measles, as may occur in persons who were incompletely immunized against measles or who have compromised immune systems. Abbreviated AMS. AMS begins suddenly with high fever, headache, cough, and abdominal pain. A rash may appear 1 to 2 days later, often beginning on the limbs. Swelling (edema) of the hands and feet may occur. Pneumonia is common. See also measles.