Whatever,you’re splitting hairs. The Equality Act does not list a rigid, closed catalogue of specific medical conditions. Instead, it uses a broad legal definition of disability, while automatically covering a few specific conditions from the point of diagnosis. Only Cancer , HIV, MS , certified visual impairments and severe long term disfigurement are mentioned.
Any other physical or mental condition is covered as long as it meets the "substantial and long-term" test eg arthritis,, back or shoulder injuries, cerebral palsy, muscular dystrophy, or loss of limbs. Hearing loss or deafness. Asthma, diabetes, epilepsy, chronic fatigue syndrome (CFS), fibromyalgia, and heart disease or stroke recovery, depression, anxiety, panic attacks, bipolar affective disorder, obsessive-compulsive disorder (OCD), schizophrenia, and post-traumatic stress disorder (PTSD), autism, ADHD,dyslexia, and dyspraxia, progressive diseases such as Motor neurone disease, dementia, and types of muscular dystrophy (as they worsen over time…
Autism and ADHD are no different than most other disabilities.