The chewing action of jaw is often taken for granted, but this highly specialised joint is something that can have far reaching implications to sufferers.  TMD (Temporomandibular Joint Disorders) or TMJ (Temporomandibular Joint) issues are often cited by medical professionals as a cause of all manner of symptoms and ailments.  Like 'sciatica' many 'Dr Googles' lead people to believe that they have this condition that becomes a generic term describing any pain that may sometimes be inexplicable or undefinable.