I often have almost complete insomnia and during these worst nights...I just about fall aslepp when I get this "zap" electrical jolt feeling in my head and it totally wakes me back up! It's like an electrical charge just bolts into my head. Like someone flicked a light switch for a split second. It really feels like a zap. An electrical charge. Very quick and short but man, does it ever totally shock me back into the wake mode. It is so bizarre. It's like my nerve system does not want me to sleep. Could someone please tell me what this is? I have had this unprecedented zaping off and on since the first week all this started last Dec. 10th, 2005! I can get this electric zapping in the head anytime I try to sleep, night and day. All my nightmare illnesses and weird body feelings started when I started taking a powerful antibiotic called "Levaquin" on Dec. 10, 2005. Within the first 24 hours my entire body exploded into these unprecedented symptoms...shoulder, arm and hand burning pain. Cold numb hands... legs twitching, insides haywire and bladder acting weird. Jolts of pain and nerve twitching all over. Total insomnia, anxiety to the max. Feeling so chilled I couldn't believe it...then hot. One year of these symptoms and so many others. Incredible. Torn rotator cuff, fractured vertabrae,joint and muscle pain and weakness...ankles at night so torturous in pain, knees during day so painful, tendonitis, gastro problems...nerve system feeling so haywire can't even explain it, you name it.