Hi, It's worth going along to the docs, and asking for a thorough check up. In the meantime, you could check out info re Autism Spectrum Disorders (ASDs). As nox has mentioned, noise is a big dislike for those that suffer ASD. Early intervention can provide kids, that have ASD, and their families with the skills that they will need. I don't want to cause you concern, as the little one may, as you say, be going through a phase. Quite often ASD isn't picked up until later years, so it's worth voicing your concerns to you GP. All the best