Infected Dermatitis

Key facts

• Dermatitis becomes infected when bacteria, most often Staphylococcus aureus, take hold in already-broken or inflamed skin.
• The flare does not settle with moisturiser alone: look for golden or honey-coloured crusting, oozing fluid, sudden worsening, and warmth over the skin.
• Treatment combines a topical antibiotic such as fusidic acid with a corticosteroid like betamethasone to fight the infection and calm the inflammation together.
• A fever or rapidly spreading redness beyond the original patch needs same-day medical attention.

Recognising the bacterial layer

Dermatitis becomes infected when bacteria, most often Staphylococcus aureus, take hold in already-broken or inflamed skin. The result is a flare that does not settle with moisturiser alone: the skin weeps, crusts over, and may smell faintly. Heat and sweat in humid conditions create ideal circumstances for this cycle to accelerate.

Plain eczema is dry, itchy and red. When infection is added, the picture shifts. Look for golden or honey-coloured crusting, oozing fluid, a sudden worsening after a period of stability, and skin that feels warm to touch. Small pustules around the edge of the rash are another pointer. A fever or rapidly spreading redness extending beyond the original patch warrants same-day medical attention.

How the combination is treated

Treatment targets both problems at once. Topical preparations that pair an antibiotic such as fusidic acid with a corticosteroid like betamethasone reduce bacterial load while calming the underlying inflammation, which breaks the flare faster than tackling either alone. Keeping the area clean with plain water, patting dry gently, and avoiding occlusive dressings that trap moisture all support recovery. The wider range of options for the skin is covered in our skin care catalogue.

When to see a doctor

See a doctor if crusting or weeping does not improve within a few days of treatment, or sooner if fever develops or redness spreads quickly beyond the original patch.

This page is educational and does not replace advice from a doctor or pharmacist who knows your health history.