Some symptoms of anxiety may present differently in people with autism.
Response to medications for anxiety and depression used for neurotypicals may be poor in Autism, and many unwanted side effects may be experienced, like with the overlapping condition ME/CFS.
Mirtazapine used at low dose has shown some positive responses for anxiety, irritability and insonmia in some individuals with Autism.
Cognitive behavioural therapy and modified dialectical behavioural therapy may help with mental health symptoms including emotional dysregulation in Autism.
Learn more about treatments https://adult-autism.health.harvard.edu/resources/anxiety-and-depression/
Many people with autism and anxiety also experience digestive health issues. Dysregulation to the gut brain axis can impact both the gut and mental health.