Yes they are problem caused by a combination of things, namely stress and anxiety because of T. These things can manifest themselves into headaches and many other physical conditions
As eric said,
It could be down to stress and anxiety.
Blood pressure could cause it also.
It could be down to a inner ear problem so please see your doctor.
Buccastem,Proclorperazin,or Betahistine can stop the dizzyness .....lots of love glynis