Skin Infections on Various Body Parts

Overview

Skin infections on various body parts means having more than one infected area of skin at the same time, or repeated infections that appear in different places over weeks or months. The skin is the body's first line of defense, and when its barrier is broken by a cut, scratch, bite, or moisture, germs can enter and multiply.

Infections can be caused by bacteria (such as staph and strep), fungi (such as ringworm and yeast), or viruses (such as warts and herpes). When several areas are affected at once, or infections keep coming back, it can sometimes point to an underlying issue such as poorly controlled diabetes, a weakened immune system, or close skin contact with an infected person. Most isolated skin infections are minor and treatable, but widespread or recurrent ones deserve medical attention to find and address the cause.

Common Causes

Different germs cause different patterns of skin infection. Common culprits include:

• Bacterial infections: Folliculitis (infected hair follicles), boils, impetigo, and cellulitis often caused by staph or strep bacteria entering through breaks in the skin.
• Fungal infections: Ringworm, athlete's foot, jock itch, and yeast infections that thrive in warm, moist skin folds and can spread to several areas.
• Viral infections: Warts, molluscum contagiosum, and cold sores that can appear in multiple spots.
• Underlying conditions: Diabetes, obesity, eczema, and conditions or medications that weaken immunity make the skin more prone to repeated infections.
• Spread from person to person or self-spread: Sharing towels, razors, or sports equipment, and scratching one area then touching another, can move germs around the body.

Associated Symptoms

Skin infections often share warning features regardless of the germ involved. You may notice:

• Redness, warmth, swelling, or tenderness over the affected areas
• Pus, blisters, crusting, or weeping fluid
• Itching, burning, or pain
• Scaly, ring-shaped, or peeling patches with fungal infections
• Fever, chills, or feeling generally unwell with more serious bacterial infections
• Swollen lymph nodes near the infected areas

Red streaks spreading from an infected area, rapidly expanding redness, or fever are signs the infection may be spreading and need prompt care.

Diagnosis & Evaluation

A clinician usually identifies the type of infection by examining the skin and asking about how it started and spread. To pin down the cause or rule out an underlying problem, they may use:

• Skin swab or culture: A sample of pus or fluid to identify the bacteria and guide antibiotic choice.
• Skin scraping: Examined under a microscope or with a special light to confirm a fungal infection.
• Blood tests: To check for diabetes or signs of a weakened immune system when infections are recurrent or widespread.
• Review of medications and health history: To find factors that make infections more likely.

Treatment & Management

Treatment depends on the type of germ and how widespread the infection is.

• Topical treatments: Antibacterial or antifungal creams for mild, localized infections.
• Oral medication: Antibiotics for spreading bacterial infections, or oral antifungal pills for stubborn or widespread fungal infections.
• Drainage: Boils and abscesses may need to be drained by a clinician.
• Treating the cause: Controlling blood sugar, managing eczema, and addressing immune problems reduce recurrences.
• Good skin care: Keeping skin clean and dry, treating cuts promptly, and not sharing personal items help prevent spread.

Finish the full course of any prescribed medication even if the skin looks better, to prevent the infection from returning or becoming resistant.

Self-Care & Prevention

• Wash hands regularly and keep skin clean and dry, especially in folds and between toes
• Cover cuts and scrapes with a clean bandage until healed
• Avoid sharing towels, razors, clothing, and sports gear
• Shower after sweating heavily or after contact sports
• Manage diabetes and other conditions that raise infection risk
• Do not scratch infected areas, which can spread germs to new spots

When to See a Doctor

See a doctor if a skin infection is not improving with basic care, keeps coming back, or appears in several areas at once. Seek urgent or emergency care for:

• Fever, chills, or feeling very unwell along with the infection
• Red streaks spreading from the area, or redness that is enlarging quickly
• Severe pain, large blisters, or skin that turns purple or black
• Infections in someone with diabetes or a weakened immune system that worsens

Rapidly spreading redness with severe pain and fever can signal a serious infection and needs emergency evaluation.

Related Topics

Frequently Asked Questions

References

1. Centers for Disease Control and Prevention (CDC). Skin Infections.
2. Mayo Clinic. Cellulitis and bacterial skin infections.
3. MedlinePlus, U.S. National Library of Medicine. Skin infections.
4. American Academy of Dermatology Association. Ringworm and other fungal infections.