How does erythema nodosum heal?

The nodules are usually tender and warm at first. As inflammation settles, they may become less painful and fade through red, purple, or yellow-brown shades, much like a bruise. Erythema nodosum generally heals without an open sore or a permanent depression, although the colour can linger. Healing may take longer when the underlying infection or inflammatory condition remains active, or when new nodules continue to appear.

Rest when your legs hurt, elevate them when comfortable, and use a cool compress wrapped in cloth for short periods. Wear loose clothing and avoid pressure over the nodules. Keep follow-up appointments so a clinician can review the pattern and look for a trigger. Do not scratch, squeeze, or cut the lumps. If symptoms are substantial, a clinician may discuss anti-inflammatory treatment or oral corticosteroids: [Oral Corticosteroid Treatment](/treatments/medical-dermatology/oral-corticosteroid-therapy/).

Contact a clinician if pain is worsening instead of easing, fresh nodules keep appearing, or the skin becomes ulcerated or drains. Seek urgent care for severe swelling of one leg, chest pain, breathing difficulty, high fever, or faintness.

Does the colour change fit normal healing? What may be keeping the inflammation active? When should I return if new nodules appear? Which activity and pain-relief options are suitable for me?