I don't see any reason to be alarmed with a 17 month old.
I would, however, be aware of sensory issues with kids. Two of my kids have sensory issues that are somewhat more extreme than normal. One of my kids craves sensory input because his system is not receiving the input he gets from the environment properly. He ties his shoes really, really tight for the input and sometimes pushes his fist into his jaw really hard. (He has other disabilities, too).
My other son is ADD and has a problem with feeling overloaded at times, for example, a radio may seem louder than it really is. We had to try every kind of underwear for him until we found the boxer briefs that didn't just drive him crazy. He wouldn't wear denim jeans until just recently because he didn't like the texture. He won't eat certain food because of the texture, such as mashed pototoes. (He is 11 yrs. now.) It could be anything.
Just something to think about. I would worry about your child though.