New conditions are constantly being recognised like post-traumatic stress disorder (PTSD) (see Re GB, RB and RP (1997) 97 (1) QR (2) and ME (Myalgic Encephalomyelitis) (see Page v Smith [1996] AC 155). Note also that even grief or bereavement may be classified as a positive psychiatric illness where the pathological grief syndrome goes beyond what is classed as normal human emotion, as in Vernon v Bosley (No 1) [1997] 1 All ER 577.