Invisible disabilities, also known as hidden disabilities or non-visible disabilities (NVDs), are disabilities that are not immediately apparent. Invisible disabilities range from chronic illnesses, fatigue, autism, ADHD, mental health disorders, and hearing/vision loss. Invisible disabilities can also include issues with mobility, such as a sitting disability like chronic back pain, joint problems, or chronic pain. People with invisible disabilities may face stigma in their workplace, school, and community as it can be difficult to understand their unique lived experience.