Infections Affecting the Tissues

Overview

Tissue infections occur when bacteria, fungi, or other microorganisms enter the skin or underlying soft tissues. They can range from mild, localized infections to rapidly progressing conditions requiring emergency treatment.

Common Types

• Cellulitis: An infection of the deeper layers of skin that commonly causes redness, warmth, swelling, and tenderness.
• Abscess: A collection of pus that may appear as a painful, swollen lump and sometimes requires drainage.
• Impetigo: A contagious superficial skin infection that often produces sores or honey-colored crusts.
• Infected wounds: Cuts, surgical wounds, bites, or ulcers can become infected when microorganisms enter damaged tissue.
• Necrotizing soft-tissue infection: A rare but life-threatening infection that spreads quickly and destroys tissue.

Signs and Symptoms

Symptoms depend on the location and severity of the infection. Possible signs include:

• Increasing redness, warmth, pain, or swelling
• Pus, drainage, blisters, or an unpleasant odor
• Skin discoloration or red streaks extending from the affected area
• Fever, chills, fatigue, or swollen lymph nodes
• A wound that is worsening or not healing

When to Seek Urgent Care

Prompt medical assessment is important when redness or swelling spreads quickly, pain is severe or disproportionate to the visible injury, or symptoms include fever, confusion, dizziness, rapid heartbeat, darkened skin, or tissue breakdown. These findings may indicate a serious infection.

People with diabetes, poor circulation, weakened immunity, chronic swelling, or a recent operation should seek medical advice early because complications may develop more readily.

Diagnosis and Treatment

A healthcare professional may examine the affected tissue and, when needed, test drainage, blood, or a tissue sample. Imaging can help identify a deep abscess or determine how far an infection has spread.

Treatment depends on the cause and severity. It may involve antibiotics or antifungal medication, wound care, drainage of an abscess, removal of damaged tissue, or hospital treatment for severe infections. Prescribed medication should be taken exactly as directed.

Prevention

• Wash cuts and scrapes with clean water and cover them with a clean dressing.
• Keep wounds dry and change dressings as instructed.
• Avoid sharing towels, razors, or other personal items.
• Wash hands before and after caring for a wound.
• Do not squeeze abscesses or pick at sores.
• Manage conditions such as diabetes and inspect vulnerable skin regularly.

This information is educational and does not replace evaluation by a qualified healthcare professional.