Most minor staph skin infections clear up within one to three weeks with proper antibiotic treatment, though the exact timeline depends heavily on the type and severity of the infection. A small boil might resolve in under a week, while a staph bloodstream infection can require four to eight weeks of treatment. Here’s what to expect for different scenarios.
Minor Skin Infections
The most common staph infections are skin-related: boils, impetigo, cellulitis, and small abscesses. For these, the typical antibiotic course runs five to 10 days. Most people notice improvement within a few days of starting antibiotics, but “improvement” doesn’t mean fully healed.
A study of 247 people with mild to moderate cellulitis of the lower leg found that by day 10, swelling had decreased by about 50% and the affected area had shrunk by roughly 55%. That’s meaningful progress, but more than half of participants still reported some discomfort at that point, with 14% rating their pain at 5 or higher on a 10-point scale. So even after you finish your antibiotic course, the area can remain swollen, warm, or tender for days or even a couple of weeks beyond that.
Impetigo, which is especially common in children, responds faster. Kids can typically return to school or daycare at least 12 hours after starting antibiotic treatment, and the sores themselves usually crust over and heal within a week or two.
How Long You’re Contagious
A staph infection is generally no longer contagious after 48 hours of antibiotic treatment. Before that point, and especially before treatment starts, staph spreads easily through direct skin contact or shared items like towels and razors. If you have an open wound or draining sore, keep it covered with a clean bandage until it’s fully healed, even after the 48-hour window.
Bloodstream and Deep Tissue Infections
When staph enters the bloodstream (a condition called bacteremia), the timeline changes dramatically. Standard treatment typically requires intravenous antibiotics for four to eight weeks. This often begins in a hospital, though some patients transition to outpatient IV therapy or newer long-acting antibiotics that can be given as infrequently as two doses a week apart.
Complicated bloodstream infections, where bacteria have seeded into the heart, bones, joints, or other deep tissues, require even longer courses of treatment, generally more than two weeks at minimum and often extending well beyond that. These infections carry serious risks. Even among carefully selected low-risk patients in one large study, mortality ranged from 17 to 23 percent. Recovery from these deep infections can stretch into months when you factor in the treatment period, follow-up monitoring, and regaining strength.
Factors That Slow Healing
Several things can push your recovery timeline longer than average. Diabetes and other conditions that compromise blood flow or immune function make it harder for your body to fight off staph and for antibiotics to reach infected tissue effectively. Infections in the lower legs tend to heal more slowly than those on the arms or torso, partly because of reduced circulation.
The size and depth of the infection also matters. A superficial skin infection that stays near the surface heals far faster than an abscess that needs to be drained. If your doctor performs a drainage procedure, expect an additional recovery period while the wound closes from the inside out, which can take one to three weeks depending on size.
MRSA (methicillin-resistant staph) doesn’t necessarily last longer than regular staph, but it limits which antibiotics work. If you’re initially prescribed an antibiotic that doesn’t cover MRSA, you could spend several days on an ineffective treatment before switching, which extends the overall infection timeline.
Recurrence Is Common
One of the more frustrating aspects of staph infections is how often they come back. Within one year of an initial skin or soft tissue infection, up to 19% of patients experience a recurrence. This doesn’t mean the first infection wasn’t fully treated. Staph bacteria naturally live on your skin and in your nose, and some people are more prone to repeated infections.
Recurrences tend to follow the same timeline as the original infection in terms of treatment duration. If you’re dealing with repeated staph infections, your doctor may recommend a decolonization protocol, which involves using specific nasal ointments and antiseptic body washes to reduce the amount of staph living on your skin. This can significantly lower the odds of another episode.
What Recovery Actually Looks Like
The first two to three days of antibiotic treatment are when most people see the biggest shift. Redness stops spreading, pain starts to ease, and any fever typically breaks. If your symptoms are getting worse after 48 to 72 hours on antibiotics, that’s a signal the medication may not be working and you need a reassessment.
After that initial improvement, healing is more gradual. Redness fades slowly over one to two weeks. Swelling, especially in the legs, can linger even longer. Full resolution of all symptoms, including any skin discoloration or firmness at the infection site, can take three to four weeks for moderate infections. Some people notice a darker patch of skin at the site that persists for months after the infection itself is gone. This is post-inflammatory pigmentation change, not an ongoing infection.