Does anyone know what these red blotches could be?

Hi, yesterday I noticed a blotchy spot on my foot which is slightly raised and hard felling but its definitely not a pimple of any kind. Later on I then noticed I had 5 more of these very itchy blotches on my legs and behind my knees some feel more raised than others but all are extremely itchy. I've attached pics below and if anyone could help that'd be great thanks x

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Erin,do you have pets of any kind,especially cats? They could be flea bites. Or have you been anywhere recently close to animals…at a friends house maybe?.
If you have a cat then you need to treat the cat for fleas and then treat the whole house.Any vet can advise on good treatments to get rid of the fleas

Try taking an antihistamine like Cetrizine. one a day.

I only have a dog and he was thoroughly checked for fleas or ticks when I noticed these as thats what I thought it could be. They are still as itchy as they were when they appeared but I will wait and see if they go away and if not will go to doctors

bed bug bites maybe?