Is there a discernable difference between Depression and "burnout"? I don't think that there is - 'Same dog different leg' as they say.
Jonathan Trott: I wasn't suffering from depression, I was just burnt out - Telegraph
Chappell opted out of the 1981 Ashes tour because of "burnout". He cited 'family and business reasons' at the time, but really, it was obvious to all after the 'Underarm Incident' that he had more than a gut-full of International cricket.
The point being, not every cricketer can be like Tendulkar, Kallis, or Dravid. Neither should they be, as this would make the sport predictably monochrome. Trott should have the support of his team mates like Chappell, and be able to make a come back in his own good time like Chappell. That way, the England team will benefit in the longer term just like the Australian team did. Chappell's leadership in the 1982/83 Ashes series was inspired, and his batting excellent (Ave = 48.63) considering the lay-off. His last 5 Tests against Pakistan in 1983/84 yielded 364 runs at 72.80.