Yes, it is possible for a person with ADHD to have reduced sensitivity to sound or even experience no sensitivity to sound. Sensory processing issues, including auditory processing, are not uncommon in individuals with ADHD. While some people with ADHD may be sensitive to sounds and find certain noises overwhelming, others may have a reduced sensitivity or be less affected by auditory stimuli.
Sensory processing issues are more broadly associated with sensory processing disorder (SPD), which is a condition where the brain has difficulty receiving and responding to information that comes in through the senses. Sensory processing disorder can co-occur with ADHD, but it is a separate condition.
Individuals with reduced sensitivity to sound may be less reactive to noises that typically bother or distract others. This may lead to situations where they appear not to notice or react to sounds that others find disruptive or intrusive.
It's important to remember that ADHD is a complex and heterogeneous condition, and its presentation can vary widely from person to person. Some individuals with ADHD may have sensory processing issues, including auditory sensitivity or insensitivity, while others may not experience such challenges. If you or someone you know is experiencing sensory issues that significantly impact daily life, it's advisable to seek evaluation and support from a qualified healthcare professional or specialist.