An Internet-based Self Applied Treatment Program for Prolonged Grief Disorder (PGD)

Inclusion Criteria: * Age ≥ 18 years * Meeting diagnostic criteria for PGD * Sign an informed consent * Ability to understand and read Spanish * Ability to use a computer and having access to the Internet * Having an e-mail address Exclusion Criteria: * Presence of risk of suicide or self-destructive behaviors * Presence of another severe mental disorder (substance abuse or dependence, psychotic disorder, dementia o bipolar disorder) * Presence of severe personality disorder * Presence of a medical condition whose severity or characteristics prevent the performance of treatment * Receiving other psychological treatment during the study for PGD * An increase and/or change in the medication during the study period