Causes of skin infections include viruses, bacteria and fungi, according to Healthline. Viruses that cause most skin infections include human papillomavirus, herpes simplex virus and poxvirus. The bacteria that cause skin infections include streptococcus and Staphylococcus aureus. Fungal skin infections commonly occur as a result of yeast.
One factor that predisposes individuals to skin infections is a weakened immune system as a result of medication side effects or diseases. Another factor is broken skin, which allows the entry of bacteria into the skin, says Healthline. Warm, moist conditions such as sweaty clothes favor the growth fungi, leading to fungal skin infection.
Depending on the cause, the types of skin infections include rubella, ringworm, boils, cellulitis and fifths disease, notes Healthline. Yeast infections and methicillin-resistant staphylococcus aureus are also types of skin infections. Although patients with skin infections experience different symptoms depending on the type of skin infection from which they suffer, skin infections commonly cause skin redness. The symptoms of skin infections that vary with type include inflammation, as in the case of cellulitis, blisters, sores and lesions.
The cause and severity of a skin infection determines the treatment option, states Healthline. For instance, while antibiotics are a common treatment for bacterial skin infections, some viral skin infections usually disappear on their own without treatment.