To be honest, I am not aware of a phobia I have until it happens. It was an unforgettable experience that could kill me instantly. I remember before, I can ride an elevator freely. I have some difficulties when it comes to height, but one experience really terrified me. I never thought I am claustrophobic until I rode an elevator going to 31st floor. When it closed, I pressure of going up almost blow up my head. I panic because I know I cannot go outside easily because I need to push a button for a specific floor to open the door. I did it. I able to get out at 6th floor. I managed to use the elevator again to get down and I never ride an elevator ever again. I know I will going to faint once I am riding an elevator going to the highest floor. At present I can take up to 10th floor, but more than that, I cannot take the pressure and staying inside an elevator for more than 10 seconds will lead me to fainting. However, phobia is all in the mind. You just need to fight it back to let it gone.