; (B) providing modified academic assignments; (C) allowing for gradual reintroduction to cognitive demands; and (D) other appropriate academic accommodations or adjustments. (b) Certification requirement The certification required under subsection (a) shall be in writing and include a description of the law or regulation that meets the requirements of subsection (a). 8582. Definitions In this subpart: (1) Concussion The term concussion means a type of mild traumatic brain injury that— (A) is caused by a blow, jolt, or motion to the head or body that causes the brain to move rapidly in the skull; (B) disrupts normal brain functioning and alters the physiological state of the individual, causing the individual to experience— (i) any period of observed or self-reported— (I) transient confusion, disorientation, or altered consciousness; (II) dysfunction of memory around the time of injury; or (III) disruptions in gait or balance; and (ii) symptoms that may include— (I) physical symptoms, such as headache, fatigue, or dizziness; (II) cognitive symptoms, such as memory disturbance or slowed thinking; (III) emotional symptoms, such as irritability or sadness; or (IV) difficulty sleeping; and (C) occurs— (i) with or without the loss of consciousness; and (ii) during participation— (I) in a school-sponsored athletic activity; or (II) in any other activity without regard to whether the activity takes place on school property or during the school day. (2) Health care professional The term health care professional means a physician (including a medical doctor or doctor of osteopathic medicine), nurse, athletic trainer, physical therapist, neuropsychologist, or other qualified individual— (A) who is registered, licensed, certified, or otherwise statutorily recognized by the State to provide medical treatment