An eval would be a fantastic thing, especially if it's not something you've dealt with in the past.
We're an adhd household... so we're totally familiar with OUR kind of sensory issues (adhd always comes along with sensory "schtuff" because of how our brains process information, much positive along with the neg... which it why I'm raising my eyebrow and laughing to myself at the current trend of dual diagnosing adhd with spd). But adhd-sensory schtuff is different from autism sensory, different from agoraphobia sensory, different from SPD, and different from Sensory Integration, etc.. Which is an IMPORTANT series of distinctions... because while the actual expressions overlap (like my son can't wear wool... he says it's like wearing eyelashes... or shirts with scratchy tags cause meltdowns... or or or) the TREATMENTS are vastly different. Something that helps an autistic child will drive an adhd child lunatic crazy in some cases or be perfect in another case. Ditto Sensory Integration, ditto, ditto, ditto.
Same token MOST toddlers have some sensory quirks. Their nervous systems aren't totally wired yet, are in the process of rewiring, AND their skin is still super sensitive, as are ears, as are eyes, as are their tastebuds, as are their __________. So most of these kids just grow out of their sensory things.
Adhd kids don't, ever. I mean... our skin toughens, our ear muscles strengthen (without strong ear muscles the body can't hold the bones apart to muffle noise), our nervous system finishes wiring... but our sensory schtuff is just part of how our brains work. What changes is our self control at reacting to stimuli, as well as our ability to process more info. ((As an adhd adult I not only still feel every single stitch of clothing ***at all times*** -like my socks on my feet inside my shoes to my lingerie, jeans, tee, etc... which I understand others only feel if they stop and think about them... but I also feel every beat of my heart, expansion of my intercostals while breathing, the feel of my lashes as they push through the air, bounce on the bottom lashes, ETC. It never stops... the CONSTANT flow of information, and that's only one tiny area, I also hear everything at once, feel the air temp, movement, humidity, changes and constants in light, the list goes on. I once wrote out everything that I'm aware of and have to block out for a therapist, and the list was over 100 items long. As kids it's overwhelming... but the time we reach adulthood we've learned to shove it into the background MOST of the time. LOL... and quite frankly we have more power as adults. We buy clothes that feel good, can play loud music that downs out the world when we have to concentrate -so there's only one thing to ignore instead of 70-, cook food we like the taste/texture of, etc.))
But all that is JUST adhd sensory schtuff, and it's only the tip of the iceberg. Certain disorders can be trained to accommodate in ways that ours can't... and certain disorders can actually, with treatment, be all but eliminated. So knowing exactly what you're dealing with is very very helpful.
So as Martha said; concerned, yes. Panic, no.
:)