Seizure disorders affect not only the individual living with seizures, but also those caring for them. Carer–patient relationships may be influenced by, and have an influence on, some aspects of living with seizure disorders — with potentially different interactions seen in epilepsy and psychogenic nonepileptic seizures (PNES). We studied the influence of patient and carer attachment style and relationship quality on carer wellbeing and psychological distress, and explored whether these associations differ between carers for people with epilepsy and for those with PNES.