Hives, also known as urticarial, Skin rash could be hives, and the itching from hives may range from mild to severe, It can be triggered by many substances or situations and usually starts as an itchy patch of skin that turns into swollen red welts.

If you’ve had red or skin-colored bumps that appeared and disappeared quickly, then it’s unlikely to be simple bug bites.

Symptoms:
• Bacterial infection 
• Raised itchy bumps, either red or skin-colored
• “Blanching” (when pressed, the centre of a red hive turns white)
• Some food (especially peanuts, eggs, nuts and shellfish)
• Physical stimuli, such as pressure, cold, heat, exercise or sun exposure
• Latex
• Blood transfusions
• Pollen