This document discusses three common illnesses: common cold, jaundice, and mumps. Common cold is a viral infection of the upper respiratory tract causing symptoms like cough, sore throat and nasal congestion. Jaundice is a condition where the skin and eyes appear yellowish due to high bilirubin levels in blood which can be caused by liver diseases or abnormalities. Mumps is a viral infection causing swelling of the salivary glands resulting in puffy cheeks and jaw.