Thank you for your query,
As the pink,small raised bumps on present on exposed parts of the body , they are mostly due to mosquito bite and they have itching.
Or another possibility is due to a allergic papular rash
because of blankets or sleeping bags.
Better to send the clinical photographs for accurate diagnosis or consult the doctor for physical examination.
For itching you can apply calamine lotion and if there is severe itching
you can give oral antihistamines like cetirizine
in prescribed dose.
Hope I have answered your query.