My daughter just turned 3. I truly believe she has some form of a mental disorder. It's terrible but I definitely don't think she is normal. She had severe colic when she was born - screaming several hours a day. We tried everything to calm her down (car rides, 8 different formulas, stroller rides, vacuum, etc...). We had a scan of her stomach at 1 month old and found nothing - except her stomach emptying time was slow. This behavior lasted so long our Pediatrician said she was too old to have colic so the doctor diagnosed her with Acid Reflux. She was on 2 different medications for Acid Reflux and it did not change her. She no longer is on the meds. At 10 months old she began holding her breathe until she passed out. She did this over little things - she was just mad and wanted her way. Luckily, it has been 9 months since her last episode. I can honestly say she has never cried. She screams. Her screams are extremely loud (painfully loud) and these tantrums can last 45 minutes or longer. These "tantrums" happen every day and sometimes several times through out the day. She becomes extremely aggressive - ramming the door like a football player, throws things, hits, kicks. There is no rhyme or reason to her tantrums - she gets angry over locking the car window or a diaper change. Minor things that didn't upset her 10 minutes before hand!! I have a son who is 4 and several nieces and nephews and I have never seen behavior like this. She scares me when she acts like this. Her behavior causes so much stress in our family and we do not know what to do.