Hi, My father is 77 years old an recently underwent  Rapid Arc treatment for prostrate cancer. Even after completion of the treatment he gets up talents 10 times in the night to to to washroom. Also he gets severe cramps in his toes which make it impossible for him to sleep. My question is
Initially during and after the radiation treatment, there is swelling of tissues and that may actually worsen the symptoms. Also, it can cause infection of the bladder area leading to these symptoms. Eventually the size reduces, and the patient is relieved. Important thing is to know if the disease is under control. Get a serum PSA done and if it is normal then don't worry. The symptoms will ameliorate with time. If it is raised, then he may need some other form of treatment like hormone therapy.