Functional Neurological Disorder (FND) presents unique challenges in adult social care settings fluctuating symptoms, invisible disability, and frequent misunderstanding can make assessment and support planning difficult. This practical guide is written specifically for social workers, care coordinators, and support providers working with adults living with FND. It provides clear, actionable guidance on: understanding FND and its impact on daily functioning; conducting person-centred assessments that account for fluctuating and invisible symptoms; safeguarding considerations for adults with FND; developing flexible, responsive care plans; supporting individuals through crisis, relapse, and recovery; and working effectively alongside NHS and community health teams. Grounded in both clinical understanding and the lived experience of FND, this guide equips social care professionals with the knowledge and confidence to provide truly effective, compassionate support.