Granuloma annulare in Child
The disorder is usually localized when it occurs in children, but a generalized variant or a subcutaneous variant can occur.
GA may have a prolonged course, but lesions tend to spontaneously resolve without scarring.
L92.0 – Granuloma annulare
65508009 – Granuloma annulare
- GA is most often mistaken for dermatophyte infection (tinea corporis, or "ringworm"). The presence of scaling in the annular plaques of a dermatophyte infection should allow the distinction. Additionally, dermatophyte infection can be diagnosed by KOH examination of associated scale.
- Sarcoidosis can be annular and similar in appearance.
- Subcutaneous GA is often mistaken for rheumatoid nodules or malignancy. Coexisting papular or annular lesions are frequently seen in patients with this form of GA.
- Erythema annulare centrifugum may be distinguished from GA by characteristic trailing scale at the inner border of the annular erythema.
- Lichen planus may occasionally present with annular lesions; however, these lesions tend to be flat-topped and violaceous with an overlying network of fine white lines (Wickham's striae).
- Necrobiosis lipoidica presents as violaceous to red-brown plaques with atrophic yellow-brown centers on the shins.
- Perforating GA or a papular form of GA can be mistaken for molluscum contagiosum.
- Interstitial granulomatous dermatitis
- Palisaded neutrophilic granulomatous dermatitis