I think the way to answer this is to say that rashes can be caused by the same thing (or group of things) that caused the fever. A fever itself doesn't cause rash. Both are symptoms of something else.
It gives you rashes and a swelling tounge!
Rashes on the face have nothing to do with what sex your unborn child is.
Head and shoulders
Yep, now would be a good time to get your will in order.
there is headache,rashes,nausea,pharyngitis and fever
is 98.7 a fever for an eight year old child
The black death! or bubonic plague symptoms were buboes fever rashes and nausea
Yellow fever causes dizziness, high temperature, body ache, and rashes
Tomato viral fever is a plant disease caused by a virus that infects tomato plants. Symptoms include yellowing and curling of leaves, stunted growth, and reduced fruit yield. It can spread through infected plant debris, insects, or contaminated tools. Management involves removing and destroying infected plants and using disease-resistant tomato varieties.
Then take the child to a doctor.
I hope that rather than waiting for this answer you have taken your child to the hospital or at least your pediatrician. A feverish three year old with rashes and sweat is probably very uncomfortable, very unhappy and possibly in need of intervention for hydration. There are any number of viruses and rashes that cause fever and both related and non-related reasons for rashes. A professional, in-person consultation is your best bet.