After a severe concussion, you may not be able to return to play for a month. If this wasn't your first concussion, your return to play may take even longer. A second blow to the head, even a minor one, can result in a loss of the automatic control of blood vessels to the brain. Never return to a sports activity until you are cleared by a doctor. Most people get better after a concussion without any permanent damage.
People have signs of concussion for weeks to months.
Repeated concussions could cause permanent damage. After several concussions, your doctor may talk with you about changing sports. This handout provides a general overview on this topic and may not apply to everyone. To find out if this handout applies to you and to get more information on this subject, talk to your family doctor. Visit familydoctor.org for information on this and many other health-related topics.