A male friend, age 66, is having night sweats and is clammy in the morning. It doesn t happen every night and he doesn t have any other symptoms. He takes an occasional .5mg klonipan and takes a blood pressure medicine, low amount, as needed when he is having pvc s. His cardiologist said he no longer needed the bp meds as his bp is within normal limits now, but the medicine seems to help with pvcs so he takes it sometimes. Any ideas what is causing the night sweats?