 [ Symptoms ] scared of the smallest heights  i feel like i can not breath and my whole body shakes this has happened in the last year or so an example is tonight i had to change my smoke detector batteries and stand on a chair i could not do it i live in a house with a loft and i have never been upstairs [ Disease ] this is a mental illness that causes people to have severe high and low moods people with this illness swing from feeling overly happy and joyful or irritable to feeling very sad and hopeless or unhappy in between these mood swings a person is moods may be normal