Medically reviewed by Susan Bard, MD Hives are red, raised bumps that stem from allergies, infections, or stress.Flea and chigger bites look like small, red, pimple-like bumps and feel very ...

Medically reviewed by Anju Goel, MD Key Takeaways Typhus is an infection spread to humans by fleas, mites, and lice. Symptoms include fever, chills, body aches, and a rash. Louse typhus can be deadly ...