['This study examined pain intensity (PI) in eating disorders.', 'Comparisons between inpatients (N = 208) reporting moderate to severe pain (HiP) and no pain or mild pain (LoP) at admission were made, and the relationship between PI and treatment response was examined.', 'Patients with HiP were older, had a greater likelihood of having a bingeing and/or purging diagnosis, and reported greater body dissatisfaction, drive for thinness, depressive symptomatology, and neuroticism in comparison to those with LoP. They were also more likely to report widespread pain, to catastrophize about pain and to use praying and hoping to cope with pain. PI was associated with longer length of inpatient hospitalization, even after controlling for degree of underweight, depressive symptomatology, and neurotic personality features.'] Does pain severity in eating disorders predict longer inpatient hospitalization?