Generally not. A subungal hematoma is a bruise. It is usually caused by hitting the toe.
subdural hematoma
A bump is not bad. It is just an area of swelling. If it was a hard blow or you passed out at all.
A subdural hematoma can develop within hours to weeks after a head trauma, but it commonly occurs within the first 24 to 48 hours after the injury. It is important to monitor for symptoms of a subdural hematoma like headaches, confusion, and neurological deficits in the days following a head injury.
Head hematoma should be initially treated with cold therapy (ice pack or cold compress) to help reduce swelling and inflammation. Applying heat can increase blood flow to the area, which may worsen the hematoma. If there is any uncertainty about how to treat it, it's best to seek medical advice.
Epidural hematoma
No
i think its called a Hematoma or something
Either face of the head is the hitting surface.
bonk
I think so
No, hitting your head with your pillow while you're sleeping has absolutely nothing at all to do with autism and there's no reason to think that it does. If you're hitting your head with your pillow in your sleep this is fairly normal.