Got mine courtesy of The Army..
Still got them now, 18years after joining up..
They never go away, you just grow to love ’em..
The TA ‘developed’ mine. :-(
Mine are also on the inside of my leg caused by over-pronation which so far nothing (physio, podiatry, bio-mechanics, gait analysis, orthotics) seems to have touched. Deep massage helps lots, but hasn’t cleared it up completely.
My quest for injury free running continues!