
Medically reviewed by the Rice Emergency Room Medical Team

Medically reviewed byDr. Amir Zegar, DOBoard-Certified Emergency Medicine Physician | Medical Director
What is a Staph Infection
Staph Infection, also known as Staphylococcus Aureus, is a type of bacteria known to cause infections. It can range from minor skin issues to severe illnesses. Staph infections are very concerning to medical professionals due to its potential of progressing into the condition called Methicillin-resistant Staphylococcus aureus (MRSA)), which is a far more challenging and dangerous condition
What is MRSA?
Causes of Staph Infections
Staph bacteria are typically found on the skin or in the nose of healthy individuals without causing harm. However, these bacteria can become problematic when they enter the body through cuts, abrasions, or other breaches in the skin.
Factors that can increase the likelihood of a staph infection include compromised immune systems, chronic conditions like diabetes, and the presence of invasive devices such as catheters or surgical implants (Cleveland Clinic).
How It Spreads
The bacteria can spread through direct contact with an infected person or through contact with contaminated objects. This makes environments like hospitals, gyms, and nursing homes hotspots for staph transmission. Personal hygiene practices, such as regular handwashing and covering wounds, play a crucial role in preventing infection.
Symptoms of Staph Infections
Staph infections manifest in various forms, often starting with minor skin irritations. Common symptoms include boils, impetigo, and cellulitis. Boils are painful, pus-filled lumps that form under the skin, while impetigo is characterized by red sores that rupture, ooze, and form a yellow-brown crust. Cellulitis involves a deeper skin infection, leading to redness, swelling, and tenderness of the affected area (WebMD).
In more severe cases, staph bacteria can enter the bloodstream, causing bacteremia or sepsis, which are life-threatening conditions. Symptoms of a serious staph infection include high fever, chills, low blood pressure, and a rash. Immediate medical attention is critical when these symptoms appear, as the infection can spread to organs and bones, leading to conditions like endocarditis, osteomyelitis, or pneumonia (Cleveland Clinic).
Progression to MRSA
MRSA is a type of staph bacteria that has become resistant to antibiotics commonly used to treat a staph infection.
This resistance makes MRSA more difficult and dangerous than regular staph infections. MRSA can also develop from a regular staph infection, often when antibiotics are misused or overused. This allows the bacteria to evolve and resist the antibiotics.
How Severe Can It Get?
MRSA infections can present similarly to other staph infections, with symptoms like boils or abscesses. They are also far more likely to become severe and spread rapidly. The symptoms of a MRSA infection are more intense and harder to manage than normal staph, which causes medical professionals to follow specific treatment strategies for resistant bacteria (Mayo Clinic).
Treatments for Staph and MRSA Infections
Treating a staph infection depends on its severity. Minor skin infections are usually managed with topical antibiotics and proper wound care. More severe infections may require oral antibiotics, and in cases where the infection is extensive or has formed abscesses, surgical drainage might be necessary (Cleveland Clinic).
For MRSA infections, treatment options are limited due to antibiotic resistance. Healthcare providers might use stronger antibiotics, such as vancomycin or linezolid, and treatment often requires hospitalization to manage complications and monitor the patient’s response to therapy. Preventive measures, including strict hygiene practices and responsible antibiotic use, are essential to control the spread of MRSA (Mayo Clinic).
Who Gets Staph Infections?
Staph infections can affect anyone, but certain groups are at higher risk. Individuals with weakened immune systems, such as those undergoing chemotherapy, living with HIV, or suffering from chronic diseases like diabetes, are more susceptible. Athletes, particularly those involved in contact sports, are at risk due to the potential for skin abrasions and close physical contact.
Hospital patients, especially those with surgical wounds or invasive devices, are also at increased risk. Additionally, people living in crowded or unsanitary conditions, such as military personnel in barracks or individuals in correctional facilities, face higher exposure risks (WebMD).
Works Cited
Cleveland Clinic. “Staph Infection (Staphylococcus Infection).” *Cleveland Clinic*, https://my.clevelandclinic.org/health/diseases/21165-staph-infection-staphylococcus-infection.
WebMD. “Staph Infections and Cellulitis.” *WebMD*, https://www.webmd.com/skin-problems-and-treatments/staph-infection-cellulitis. Mayo Clinic. “MRSA infection – Symptoms and causes.” *Mayo Clinic*, https://www.mayoclinic.org/diseases-conditions/mrsa/symptoms-causes/syc-20375336.
24x7 Available