My oldest child had uncontrollable SCREAMING, not crying, after DPT. I'm not even sure screaming is the right word--it didn't sound human. I've never heard anything like it before or since, and I hope to heaven I never hear it again.
He was also flailing, with intermittent spasms at arching his back and stiffening.
This went on without any letup for several hours.
We were later informed by the pediatric neurologist that this is a form of seizure/encephalopathy, and definitely caused by the vaccine, but at the time, I had no idea what it was.
I kept calling the pediatrician, but the nurse wouldn't let me speak to the doctor, and kept telling me that I was over-reacting to "a little fussiness." I even asked if I could just come in and show the baby to the doctor, but the nurse told me flatly that they would refuse to see him.
When it's your first baby, you're totally sleep-deprived, you have no family in town, you've never seen a seizure reaction before, and the Medical Authority Figure tells you you are over-reacting, that you're a Hysterical New Mother, and that everything is just fine -- you are just a wee bit reluctant to strap your baby into the car seat and go to the ER against official medical advice from the pediatric nurse.
The neurologist who diagnosed it after the fact didn't report it, nor did the pediatrician (though they did fire the nurse).
I know many parents (in real life, not just via the Internet) who say their babies had similar reactions, and like my experience, the pediatricians/nurses brushed them off. The kids don't all have autism, but they all have something wrong medically. I can think of 2 off the bat who don't have autism, but who have celiac, at least 3 who have asthma, there are a bunch with food allergies, 1 has epilepsy,and one has juvenile rheumatoid arthritis.
Of the 5 I know from our school who do have autism, 3 had this reaction, 1 "slept" for 2 days, and 1 had no reaction at all, but had recurrent ear infections for years, including during the time he got his 12-month shots. Some or most of the others also had recurring ear infections, but I can't remember which was which. Back then, it seemed like a lot of babies were on antibiotics nearly constantly for recurring ear infections.
That's just from 2 different grades at our local elementary school. And only one besides ours was ever sent to a pediatric neurologist (the one who has epilepsy). We do go to a different pediatrician than the others--we started with one before we moved to this school district, and liked him enough to not want to switch. (we hated that nurse, though--we were very glad to see her go.)