Fuck help anyone if you WERE a doctor - can you imagine trying to get a sick note!
if, in my clinical opinion, you were unfit, i would issue a sick note
if, in my clinical opinion, i could not find evidence of condition(s) affecting your ability to work, i would not
sick notes are there as evidence of ill health and of the medical opinion that the person should refrain from work
they are not a meal ticket
but i am not a doctor. so its all academic and not on topic