A symptom is a medical sign indicating the nature of the disease.A symptom may loosely be said to be a physical condition which indicates a particular illness or disorder (e.g. Longman, 1995). An example of a symptom in this sense of the word would be a rash. However, correctly speaking, this is known as a sign, as would any indication detectable by a person other than the sufferer without verbal information from the patient.Some symptoms, such as nausea, occur in a wide range