In my humble opinion a vast majority of pain (and related conditions) is the "perfect distraction" to some emotional "perfect storm" that is developing inside our minds. The brain protects us from a huge unconscious rage/fury that will be extremely dangerous reaching our awareness. Then our reaction will be: But that consciuos rage/fury has serious consequences: an antisocial, criminal, wild, violent, unresponsible.... behaviour of dramatic and unpredictable results. That's the real defensive task of our healthy brain. all the best!