I guess he started wearing it by the end of 1982
There was a story about his headband.
He met by chance a profesional tennis player Guillermo Vilas in a London Music store in 1982
Both Mark and Vilas were fans eachother, they became close friends
As you remember, Vilas is known to wear headbands to plaay tennis. He gave Mark his own headband as a present
Mark stated wearing it ever since, until he lost all his hair
I believe, there must be more info about
warm regards
ybot