No
It could be. Please consult with a medically qualified professional if you (or your child) have fallen and banged your head.
Yes it can give you a disease!
I suppose that could happen, or brain damage could cause the seizure. Find out more about stuttering on the web site for The Stuttering Foundation.
Startling someone does not cause stuttering. See the web site for The Stuttering Foundation.
Some people have started stuttering after having a stroke. Your best source for information and help for stuttering is the non-profit Stuttering Foundation of America.
I don't think that can cause stuttering. There is information for parents on the web site for The Stuttering Foundation.
Falling and hitting your head can cause a fracture of the skull, bruising of the brain, unconsciousness, disorientation, delirium, and possibly death. Alternately, a concussion, which shakes the brain inside the skull, can cause short term confusion. Both require medical examination.
Hitting the back middle of the head on a shelf can potentially cause a head injury such as a concussion, scalp laceration, or even a skull fracture. It is important to seek medical attention if symptoms such as dizziness, headache, or nausea persist after the injury.
Anything that changes the brain could cause stuttering. I have read of others who started to stutter when on a medication. Check the research papers on the web site for The Stuttering Foundation.
There are different causes for stuttering according to the Stuttering Foundation of America, and Dr. Drayna recently identified genes that cause stuttering in some cases. It is genetic in our family. Some studies have shown evidence that there may be a link to chemical imbalance in the brain.
No, hitting your head at 15 mph will result in less force and impact compared to being hit with a sledgehammer. The force generated by a sledgehammer is much greater due to its weight and speed of impact, which can cause severe damage to the head and brain.