the bumps on your back is because either you have a virus or an eritation to somthing you put on your body like a new cream or somthing
The black spider with blue iridescent legs and a white spot on its back is likely a daring jumping spider (Phidippus audax). These spiders are common throughout North America, including Minnesota, and are known for their bold jumping behavior and striking coloration. They are not considered dangerous to humans and are beneficial for controlling insect populations in and around homes.
A false widow spider is a spider that is known to have a skull depicted on its back. This spider also has orange legs.
A brown spider that has a white diamond on its back is known as a Parson spider. This spider does have a mildly venomous bite.
It can just be a red back spider...
It sounds like you may have encountered a jumping spider. Jumping spiders are known for their small size and ability to leap short distances. Their distinctive markings can include white spots on a black body. They are harmless to humans and are considered beneficial because they help control insect populations.
The camel back is a cricket with spider-like legs.
Your spider is a Heartstring spider the prettiest spider ever.
An Advanced and Fast Acting Lotion for Back of head Bumps, Facial Bumps and Ingrown hairs
An Arrowhead spider is brown with a green back. This spider is also known as a Triangle Orb Weaver. This spider is not venomous.
Step throat
I saw a spider that looked like this in MA mine was pretty small maybe 3-4 mm.