Hello paolopp,
I had all of the above after my radical neck dissection and radiation. Stretching and physiotherapy is essential for the neck stiffness.
Mood swings seem to be common after treatment ends. I had the same, banged lots of cupboard doors etc, until my gp prescribed a mild anti-depressant. Sadly, the mood swings hurt our closest supporters, so chemical intervention is welcome.
Your brother is fortunate to have such a caring family.
Love from Helen