- Also known as nummular dermatitis.
- Pink, red or brown and well defined.
- Dry cracked, bumpy, blistered or crusted surface.
- May be itchy or asymptomatic.
- Most common in middle age, but any age can be affected.
- Not infectious.
- Can become secondarily infected by bacteria.
- Start off from insect bite or scratch.
- Up to a dozen patches may appear.
- Waxes and wanes, and persists for weeks or months.
- Round or oval patches.
- Variable in size, from several cm to 2mm.
- Mainly on lower leg.
- Protect the skin from injury and irritation.
- Emollients and potent topical steroids.
- Oral or topical antibiotics if infected.
- Oral antihistamines if itchy.
- Short-term systemic steroids are rarely required.
- On resolution the skin can be normal, dark brown or pale.
- Itchy macule with red scaly edge.
- Ring shaped, round or oval.
- Less red and scaly or healed in the middle.
- Common among children, affects all ages.
- Contagious by contact.
- Can be spread by infected cats.
- Affects arms, legs, face or other exposed body areas.
- Topical antifungal creams.
- Infected pets should be treated.