Signs and symptoms

When it comes to health and wellbeing, signs and symptoms are types of information that can help identify if a person is unwell or is experiencing a medicine side effect or interaction.

Symptoms are felt by the person (ie, they are subjective), and can include fatigue, pain and headache. Signs may be noticed by the person, by others around them or reported as the result of test (ie, they are objective). Signs can include rash, high blood pressure, elevated cholesterol levels or blood in the stools. Some signs and symptoms are common to a number of medical conditions.


Fatigue is a symptom — something you can feel and describe — not a condition or disease. For some people, fatigue might feel like it is mostly in the body (physical, ie, lack of energy or weakness in their muscles). There are a lot of different ways that people might explain fatigue, such being tired all the time or feeling constantly exhausted or weak.When this tiredness, or fatigue, lasts for six months or more it is often described as chronic; however, chronic fatigue is not the same as the condition Chronic Fatigue Syndrome (CFS).

There are many different reasons why someone might be feeling fatigued such as poor diet, excess caffeine, anxiety, poor sleep, overwork or anaemia. Read more about fatigue.