Yes, it is possible to have mild autism and not know it. Autism is a neurological disorder that affects how an individual interacts with their environment, processes information, and communicates with others. Mild cases of autism, sometimes referred to as Asperger's Syndrome, can go undetected for years as the individual may not display any outward signs or symptoms that are more commonly associated with autism.
In mild cases, individuals may have difficulty with social interactions, communication, and even repetitive behaviors, but these may not be noticeable to the untrained eye. They may find it difficult to make and sustain eye contact, have difficulty reading body language, and may have trouble understanding what other people are feeling. They may also have difficulty with verbal communication, particularly in social situations, and may prefer to communicate with others non-verbally.
In addition, individuals with mild autism may find it difficult to process sensory information. They may be overwhelmed by loud noises, bright lights, strong smells, and even certain textures. They may also have difficulty with tactile and motor skills, making tasks such as writing or doing puzzles more difficult.
Finally, individuals with mild autism may also exhibit certain repetitive behaviors, such as rocking back and forth or flapping their hands, as well as having difficulty with change and transitions.
Overall, it is possible to have mild autism and not know it. However, if you suspect that you might have autism, it is important to speak to a medical professional for a formal diagnosis.