signoria,

"since my doctor basically have told me, time and time again, that any physical damage is already healed and that too much rest would be counterproductive."

This is not true at all. This doctor does not know what he is talking about. The brain only heals during low stress times. It needs good REM sleep, too. The skull may have any fractures already healed but the brain tissue needs rest to heal.

What did you do while on sick leave?

Ice the back of your head, high on your neck when you have a head ache. I bet it makes a difference. Put a towel over the ice pack so the cold is not extreme.

Try paracetamol and aspirin (salicylic acid) combined and see if it helps your head ache.

What is your physiotherapist doing for you? Where/how do you use the TENS machine?

btw, Where are you? Somewhere in Europe I guess but???

My best to you.