Infected eczema typically shows a yellow, honey-colored crust forming over eczema patches, along with oozing fluid and skin that looks more discolored, swollen, or warm than a normal flare. These changes can develop quickly, sometimes within a day or two, and the appearance varies depending on whether the infection is bacterial, viral, or fungal.
How Infected Eczema Differs From a Regular Flare
A standard eczema flare causes dry, itchy, inflamed patches. An infected flare adds a layer of symptoms on top of that. The most recognizable sign is a yellow or golden crusty texture forming over the eczema patch, often described as looking like dried honey. You may also notice bumps or small sores that ooze a clear or yellowish fluid, and the surrounding skin may look more discolored or swollen than usual.
The feel of the skin changes too. While regular eczema is dominated by itching, infected eczema often brings pain, tenderness, or a burning sensation to the affected area. The skin may feel warmer to the touch. If the infection is spreading, you might see the discolored or swollen area expanding beyond the original eczema patch, sometimes with visible streaks radiating outward from the site.
Bacterial Infection: The Most Common Type
Most infected eczema cases involve bacteria, particularly Staphylococcus aureus, which thrives in the cracked, broken skin that eczema creates. The visual hallmark is those honey-colored crusts forming over sores that leak clear fluid or pus. This presentation closely resembles impetigo, a common skin infection where red, itchy sores break open, weep for a few days, then develop a characteristic crusty yellow scab. In many cases, the bacterial infection is essentially impetigo layered on top of existing eczema.
These crusted sores tend to cluster around the original eczema patches but can spread to nearby skin, especially in areas that get scratched frequently: the arms, legs, and around the nose and mouth. As the sores heal, the crusts fall off without typically leaving scars.
Viral Infection: Eczema Herpeticum
A less common but more serious form of infected eczema is eczema herpeticum, caused by the herpes simplex virus. This looks distinctly different from a bacterial infection. Instead of golden crusts, you’ll see a sudden eruption of small, dome-shaped, fluid-filled blisters, usually about 2 to 3 millimeters across. They tend to appear in tight clusters over areas where eczema is already present.
Within about two weeks, these blisters rupture and leave behind what dermatologists call “punched-out” erosions: small, round, shallow craters with dark or bloody crusts. These tiny erosions can merge together into larger raw areas with scalloped, uneven borders. New crops of blisters may continue appearing in waves, so you might see intact blisters alongside ruptured ones and healing crusts all at the same time.
Eczema herpeticum is more likely to cause body-wide symptoms like fever, fatigue, and general malaise alongside the rash. It requires prompt medical attention because it can spread rapidly across large areas of skin.
How It Looks on Darker Skin Tones
Most descriptions of eczema and infected eczema focus on how it appears on lighter skin, where redness is the most obvious visual cue. On darker skin tones, including brown, dark brown, and Black skin, that redness is often difficult or impossible to see. Instead, eczema flares and infections tend to appear darker brown, purple, or ashen grey.
Because the color difference is subtler, other visual and physical cues become more important for spotting infection. Look for skin swelling, warmth to the touch, oozing or weeping fluid, and the development of crusting or scaling over eczema patches. These signs are reliable across all skin tones, even when color changes are harder to detect.
Whole-Body Warning Signs
Infected eczema doesn’t always stay local. As the infection progresses, your body may mount a broader immune response. This can show up as fatigue, chills, and fever. You might notice swollen, tender lymph nodes near the infected area, particularly in the neck, armpits, or groin depending on where the eczema is located. Swollen lymph nodes develop because the immune system is actively fighting bacteria or viruses that have entered through the broken skin.
A fever combined with a rash that looks infected is a signal to get medical care quickly, especially in young children. The same applies if you see red streaks extending outward from the infected area, which can indicate the infection is spreading into deeper tissue.
How Infected Eczema Is Treated
Treatment depends on how severe the infection is. For mild cases, the answer may be simpler than you’d expect. A pragmatic trial published in the Annals of Family Medicine found that children with mild clinically infected eczema recovered well with topical steroid creams and regular moisturizer alone, without needing antibiotics. The study found rapid improvement with this approach and ruled out a meaningful additional benefit from adding either oral or topical antibiotics for milder infections.
This means that for many mild cases, the priority is controlling the underlying eczema flare with appropriate moisturizers and anti-inflammatory creams, which removes the conditions that let bacteria thrive. For moderate to severe bacterial infections, antibiotics (applied to the skin or taken by mouth) are still used, typically for about seven days. Eczema herpeticum requires antiviral treatment rather than antibiotics, and because it can worsen rapidly, it’s treated more urgently.
Regardless of severity, keeping the skin well-moisturized and avoiding scratching are essential for preventing reinfection. Broken skin is the entry point for bacteria and viruses, so protecting the skin barrier is the single most important long-term strategy.