The goal of this study is to investigate the association between response to pain and opioid craving in people with opioid use disorder. In this study, adults with opioid use disorder will be randomized to one of two brief education sessions followed by an assessment of response to pain. Investigators will test the association between response to pain and opioid craving.

Inclusion Criteria:

• age 18 years or older;
• diagnosis of opioid use disorder
• chronic pain
• ability to read and provide informed consent

Exclusion Criteria:

• major psychiatric or medical condition that would interfere with participation
• current opioid withdrawal
• currently receiving opioid analgesic medication for pain
• recent history of myocardial infarction or other serious cardiovascular condition
• current peripheral neuropathy, active vasculitis or severe peripheral vascular disease
• systematic inflammatory or autoimmune disorder
• admitted to current treatment episode on an involuntary status

The investigator and data analyst will be blind to study condition.