Traditional knowledge is not anecdotal knowledge e.g. Mary down the road used chamomile to help her sleep and found it wonderful. It is in fact a body of knowledge used within a profession practiced over time.
A definition from the World Health Organization states that ‘Traditional medicine is the sum total of knowledge, skills and practices based on the theories, beliefs and experiences indigenous to different cultures that are used to maintain health, as well as to prevent, diagnose, improve or treat physical and mental illnesses.’
Ireland has a very strong tradition on the use of herbal medicines and one of the largest collections of manuscripts on medical use of herbs. We are indeed fortunate to have this written information available to us.
See Dublin Institute of Advanced Studies for more information on Irish medical manuscripts. http://www.dias.ie/ School of Celtic Studies.