Lately I have found that my most troubling symptom is weakness more than pain of any kind, (altough I do occasionally have it). I usually go for PP treatments every three weeks and can, and do, extend for a month. When I do it is weakness that becomes severe, an over all tiredness that obliges me to sleep 10hrs a night. Nevertheless, I can go on walking and if I pust it I can do a mile. Just wondering if others have had this experience.