The objective of this study is to develop new digital solutions for patients with prolonged postconcussion symptoms, and investigate its usability, feasibility, and safety. The digital solutions consist of a 1) symptom mapping and clinical decision support system, and 2) a research-based system for home-based biofeedback treatment.

Inclusion Criteria:

• 18 or older at the time of inclusion.
• Mild TBI as defined by having sustained a head injury with observed or self-reported alteration of consciousness, amnesia, or other relevant acute symptoms.
• PPCS according to the ICD-10 research criteria and PTH according to International Classification of Headache Disorders 3rd edition (ICHD-3). Operationalized as reporting 3 or more symptoms (including headache) on a moderate or greater intensity level on the RPSQ.
• Proficient in Norwegian language (oral and written)
• Signed informed consent

Exclusion Criteria:

• Serious psychiatric or somatic disease, or other patient-related factors, that based on an evaluation of the study personnel responsible for inclusion, will provide obvious challenges for adhering to the protocol, including using the devices.
• Less than three months of experience with smartphones
• Not having access to an iOS or Android smartphone