His symptoms usually consist of shaking hands, the excessive onset of sweating, heart racing fast, sudden loss of energy and feeling sleepy or faint and he just does not feel right. If he has a hypo through the night while sleeping, he will wake and sit up all of a sudden and not be able to go back to sleep. It is usually a good indicator that he needs to check his blood sugar levels as soon as possible. He also has had a protein leak in urine in the past that is, a few years ago. I will get him to go to the doctor to get them investigated. Thank you for your reply.