hi, i have just discovered a pinprick rash on my inner thighs. Earlier, I noticed a fairly similar one on my inner, lower arm. That one looked like "prickly heat". However, on my thighs, the "spots" look darker red - almost as if there was a burst blood vessel under the skin. The spots however are not raised. Neither are they caused by chaffing. I am female, aged 53 slightly, but not much overweight with no underlying medical condition that I am aware of. I am normally healthy, although I do get hay-fever/allergic rhinitis,thanks