Bacteria · Skin & rash
Staphylococcus aureus
Staphylococcal infections; MRSA and susceptible strains
The short answer
Staphylococcus aureus can live on skin or in the nose without illness. It can also infect skin, blood, lungs or other sites; not every strain is MRSA.
Transmission and timing
Contact with infected wounds, contaminated items or hands can spread infection. Avoid sharing personal items such as towels and razors, and cover wounds.
CDC ↗Symptoms and risk groups
Painful, warm, red swelling or pus may occur. Appearance does not reveal antibiotic resistance; a lesion thought to be a spider bite may be an infection.
CDC ↗When to seek help
Seek emergency help for infection with confusion, severe breathing difficulty or rapid deterioration; a small-looking wound does not rule out serious illness.
NHS ↗For life-threatening symptoms, severe breathing difficulty or altered consciousness, call your local emergency number (112 in Türkiye).
What does the test show?
Culture and susceptibility testing can guide treatment. Detection of nasal carriage alone does not establish an infection requiring antibiotics.
CDC ↗Care and treatment approach
Some abscesses need drainage by a healthcare professional; the need for antibiotics is assessed separately. Do not squeeze or cut open a lesion yourself.
CDC ↗Prevention and everyday life
Keep hands and shared surfaces clean, cover draining wounds with a clean dressing and wash hands after dressing changes. Keep personal items separate.
CDC ↗Special situations and risk groups
Surgery, intravascular devices, immune problems and certain chronic conditions change assessment. Tell the care team about previous MRSA results.
CDC ↗A common misunderstanding
MRSA describes a resistance pattern; it does not mean that no treatment works. Infection site and laboratory results guide the available options.
MedlinePlus / NLM ↗Clinical assessment note
Distinguish colonization from infection and consider source control and susceptibility. Decolonization is not an automatic intervention for every positive screening result.
CDC ↗Bring a question to your appointment
Does the specimen show carriage or infection, and is wound care, drainage or an antibiotic needed?
International evidence, local decisions
Each source’s country is identified. Vaccine access, reimbursement, isolation and reporting rules vary. Use current guidance and your clinician’s advice in your country; English does not imply UK or US eligibility.
Sources and supporting evidence
- MedlinePlus / NLM · Staphylococcal infections ↗
Country context: United States · Source checked:
- CDC · MRSA basics ↗
Country context: United States · Source checked:
- NHS · Sepsis ↗
Country context: United Kingdom · Source checked:
- CDC · Clinical overview of MRSA ↗
Country context: United States · Source checked:
Related topics
Version and change history
- Written by
- Doktorclub editorial team
- Medically reviewed
- Dr. Murat Toktamışoğlu
- Reviewed on
- 14 October 2026
- Next review
- 14 April 2027
- Version
- 1.0.0
- — Medical and language review completed for this language version.
- — Sourced draft prepared in the second content wave. Medical and language review have not been completed.
Doktorclub editorial content · Prepared with AI assistance and reviewed for medical accuracy and language. Information supports, but does not replace, clinical assessment. This guide does not diagnose or create a personal medication plan. Report a content correction · Editorial standards