Developmental stages causing illness?

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I've noticed that when DD (10 months) has one of those days when she is permanently frustrated about not being able to do stuff, she tends to get sick a day or so later.

She was like this Saturday/Sunday, full of beans and frustration, and then started being sick last night and is listless this morning but with no fever.

I imagined the irritability foreshadowed an illness arriving but perhaps its the tension while she is frustrated that is upsetting her stomach, etc.

Anyone have an explanation?

I think you're thinking too hard

she's probably just coming down with something

there is a bug going round.

Think its just her coming down with the illness. I still have a day like this usually before a virus...when i'm cold and tired and off colour.

I know I'm thinking too hard

Its just that it happens like this so frequently. I'm interested if the sickness causes the 'advance irritability' or whether frustration/irritability linked to development can bring on stomach upsets and the like. Its odd that she can be full of frustration for a period a good day or two before becoming ill.

she's getting tired cos she's starting to get sick

so she gets cross

the frustration / tiredness is part of the illness though

I guess that's right. She's always in a much nicer mood when she is 'properly ill' than when she is leading up to it.

The question arose from a comment I heard from a colleagues this morning - that the frustration babies feel when they can't quite manage a new skill (crawling in the case of our porker) can actually bring on tension and cause digestive reactions, etc. Seemed feasibile I suppose.