My DD has always been sensitive to heat.
She has a 4 tog duvet in winter (though sleeps on top of it), wears the minimum of clothing and likes her showers and baths ice cold.
She has a few pillows which I wash regularly but as she gets older (she's now 3)I'm having to wash them every day due to them getting drenched overnight.
She also likes her food virtually cold.
My mum has always said she thinks DD should see a doctor. I am concerned, but is this something she'll grow out of, or a medical issue?