A blow to the head can happen in a variety of ways, whether as the result of a car accident or an incident on the job. If the impact is severe enough, it can result in a concussion and cause symptoms such as dizziness, nausea and drowsiness.
While some concussions heal on their own, the Centers for Disease Control and Prevention reports that secondary issues, such as bleeding in the brain, can occur. Some of these problems can develop without warning and those who experience a concussion may want to learn about the risks to protect themselves from debilitating brain injuries.
When a swift, sudden blow to the head occurs, it may cause blood to collect beneath the area, even if there is no visible open wound at the site of the injury. When this occurs, it can cause a stroke that may result in long-term disability.
If a concussion goes untreated, it may interrupt the normal signal patterns in the brain and cause seizures. Even those with no previous history of this issue may start to experience seizures, and those with an existing issue may find that the frequency and severity of their seizures grow worse after a concussion.
An untreated concussion can cause irregular and uncontrollable muscle movements, such as in the hands, legs and head. While this is more of an uncommon result of a blow to the head, it can interfere with everyday activities, such as driving.
Concussions are not always immediately apparent and can cause a variety of other problems with vision and balance. Immediate medical intervention is usually the most effective course of action when it comes to preventing dangerous secondary symptoms.