Erik Hedman picture

Erik Hedman-Lagerlöf

Adjunct professor

About me

I'm a licensed psychologist, licensed psychotherapist, research group leader, and professor in psychology at the Department of Clinical Neuroscience, Karolinska Institutet.

Research description

Anxiety disorders, depression and stress disorders are highly prevalent, lead to severe suffering for the affected, and are associated with substantial societal costs. The research in my group is focused on treatment and assessment of these disorders, with emphasis on health anxiety, i.e. a chronic and debilitating fear of acquiring somatic disease. Central aims of the research are also to investigate how psychological treatment works when provided in regular clinical settings and how well treatments work when delivered as via the Internet. I was part of the founding team of the Internet Psychiatry Clinic (, which is one of the leading clinics in the field of Internet-based treatment.

Five selected publications

Exposure-based cognitive-behavioural therapy via the internet and as bibliotherapy for somatic symptom disorder and illness anxiety disorder: randomised controlled trial.
Hedman E, Axelsson E, Andersson E, Lekander M, Ljótsson B
Br J Psychiatry 2016 11;209(5):407-413

Internet-based cognitive-behavioural therapy for severe health anxiety: randomised controlled trial.
Hedman E, Andersson G, Andersson E, Ljótsson B, Rück C, Asmundson GJ, et al
Br J Psychiatry 2011 Mar;198(3):230-6

Internet-delivered exposure-based cognitive-behavioural therapy and behavioural stress management for severe health anxiety: randomised controlled trial.
Hedman E, Axelsson E, Görling A, Ritzman C, Ronnheden M, El Alaoui S, et al
Br J Psychiatry 2014 Oct;205(4):307-14

Cost-effectiveness and long-term effectiveness of internet-based cognitive behaviour therapy for severe health anxiety.
Hedman E, Andersson E, Lindefors N, Andersson G, Rück C, Ljótsson B
Psychol Med 2013 Feb;43(2):363-74

D-Cycloserine vs Placebo as Adjunct to Cognitive Behavioral Therapy for Obsessive-Compulsive Disorder and Interaction With Antidepressants: A Randomized Clinical Trial.
Andersson E, Hedman E, Enander J, Radu Djurfeldt D, Ljótsson B, Cervenka S, et al
JAMA Psychiatry 2015 Jul;72(7):659-67