7. Necrotizing Fasciitis
The CDC describes necrotizing fasciitis as a rare bacterial infection likely caused by group A Streptococcus. When bacteria enter the skin through cuts, scrapes, burns, or insect bites, an infection can quickly spread. Contact your physician if you notice areas of redness or swelling that rapidly spread. Fever and severe pain are other symptoms that warrant medical attention. As this infection spreads, tissues begin to die, leaving behind ulcers or open wounds. These wounds may be black in color. Other symptoms of necrotizing fasciitis include dizziness, fatigue, diarrhea, and pus or drainage from the affected areas.
6. Pemphigus Vulgaris
According to the Genetic and Rare Diseases Information Center, pemphigus vulgaris is an autoimmune disorder that tends to affect middle-aged or elderly individuals. This skin condition appears as soft, fluid-filled blisters on otherwise healthy-looking skin. Sometimes, the condition first shows up in the soft tissues of the mouth. These blisters are painful and can interfere with the affected person’s daily activities and routines. In some cases, certain blood pressure medications, antibiotics, or anti-inflammatory agents may cause pemphigus vulgaris. Treatment may consist of steroids, immunosuppressive agents, and immunotherapy drugs.
5. Rocky Mountain Spotted Fever
This bacterial infection is spread through tick bites. According to the Mayo Clinic, symptoms of Rocky Mountain spotted fever may include fever, chills, headache, muscle pains, nausea, vomiting, and confusion. The rash, which typically does not itch, may begin on the wrists and ankles and spread up and down the body from those locations. It is critical to treat Rocky Mountain spotted fever to prevent complications such as encephalitis, inflammation of the heart, kidney failure, and death. Doxycycline is often an effective antibiotic for the treatment of this infection.Related: 11 Unusual Places Skin Cancer Can Appear