 A traumatic brain injury TBI is caused by a strong blow, jolt, or penetration to the head that disrupts normal brain functioning. A TBI can range from a mild concussion to severe brain damage. Falls, assaults, and motor vehicle accidents account for more than 50 of TBIs. Physical symptoms of a TBI can be subtle to severe and can include nausea, memory loss, mood swings, blurred vision, and light-headedness. This type of injury can be very stressful for families and can result in feelings of anxiety, burden, and depression among family members. A child who experiences a TBI will often display new social and behavioral problems, leading to further parental distress and increased family dysfunction. Recent studies have shown that problem-solving interventions can reduce caregiver distress and improve child adjustment following a TBI. However, access to skilled therapists and specialized care for this kind of psychosocial treatment is often limited in many communities. In such communities, the Internet offers a new way to meet the mental and other health needs of individuals with TBIs. This study will evaluate the effectiveness of an Internet-based psychosocial treatment in improving problem solving, communication skills, stress management strategies, and coping among teens who have had a TBI and their families. 