
Concussion
Concussions, also called mild traumatic brain injuries, are caused by blows to the head or violent movement of the upper body. Even minor concussions require medical attention, and severe concussions may need emergency medical care. Losing consciousness for more than 30 seconds, a ringing in the ears that doesn’t fade, a headache that becomes worse, and any other obvious serious symptoms are all signs that emergency care is needed. If there is bleeding in the brain, the condition is very serious and potentially deadly. In contrast to a popular myth, sleeping after getting a concussion is okay, but the person may need to be woken regularly.