In adults, the most common etiology of annular lesions is tinea, a superficial fungal infection of keratinized tissue. While tinea may be readily identifiable, a wide variety of clinical entities mimic these infections, leading to confusion and, often, misdiagnosis.
What is an annular or circular lesion?
Annular lesions are extremely common and striking in appearance but can also be misleading. The term “annular” stems from the Latin word “annulus,” meaning ringed. 1 The lesions appear as circular or ovoid macules or patches with an erythematous periphery and central clearing.
Are annular lesions itchy?
The plaques become dry, scaly and resolve leaving areas of persistent brown hyperpigmentation. Sometimes, central clearing of the plaques means it resembles tinea. The lesions are extremely itchy.
Which skin condition involves circular lesions?
Diseases That Can Cause Annular Lesions
Lichen planus. Pityriasis rosea. Plaque psoriasis. Tinea corporis.
How do you treat an annular rash?
Annular erythema usually clears up by itself. Eruptions may last for a few weeks to many years (the average duration is 11 months). Most cases of annular erythema require no treatment (and no curative therapy is known). However, topical corticosteroids may be helpful in reducing redness, swelling and itchiness.
What does a lesion look like?
Skin lesions are areas of skin that look different from the surrounding area. They are often bumps or patches, and many issues can cause them. The American Society for Dermatologic Surgery describe a skin lesion as an abnormal lump, bump, ulcer, sore, or colored area of the skin.
What is eosinophilic annular erythema?
Eosinophilic annular erythema (EAE) is an uncommon benign acute eosinophilic dermatosis of unknown etiology, originally described in children. 1,2. EAE is clinically characterized by recurrent annular, erythematous-edematous, pruritic lesions with a centrifugal growth pattern.
What does annular erythema look like?
Annular erythema is not a diagnostic term but rather a description of a spreading erythematous eruption with an annular (ring-shaped) appearance. If the expansion of the rash is not uniform it may become arciform (arc-like) or polycyclic (two or more connected rings).
What is annular Lichen Planus?
Annular lichen planus (LP) is a rare form of lichen planus, which is a condition that affects the skin and/or mouth. In annular LP, specifically, affected people develop ring-shaped, slightly raised, purple lesions with no central atrophy (tissue breakdown).
What is a gyrate lesion?
Gyrate erythema includes annular lesions with erythematous raise borders. Scale may be present or absent. They can be solitary or multiple, fixed, or expanding [1]. Tinea corporis is a dermatophyte infection of the skin.
What drugs cause erythema annulare Centrifugum?
Which medications may cause erythema annulare centrifugum (EAC)?
Amitriptyline.Azacitidine.Chloroquine.Cimetidine.Estrogen.Etizolam.Finasteride.Hydrochlorothiazide.
Is erythema annulare Centrifugum serious?
The rash may appear for no known reason and go away on its own, or it may be a sign of an underlying problem. It may appear at the same time that you have an allergic reaction to food or drugs, or after a spider or tick bite. EAC may also be a sign of an infectious disease.
Is annular erythema contagious?
Distribution is usually on the thighs and legs but can also appear on the upper extremities, areas not exposed to sunlight, trunk or face. Currently EAC is not known to be contagious, but as many cases are incorrectly diagnosed as EAC, it is difficult to be certain.
What causes erythema Marginatum?
The most common cause of erythema marginatum is rheumatic fever. It’s present in about 10 to 25 percent of people with the disease. Other symptoms are: fever.
What does discoid eczema look like?
The first sign of discoid eczema is usually a group of small red spots or bumps on the skin. These then quickly join up to form larger pink, red or brown patches that can range from a few millimetres to several centimetres in size.
What causes gyrate lesions?
The gyrate erythemas consist of a nonspecific group (often called erythema annulare centrifugum) for which the cause is usually unknown, and three specific types (erythema marginatum rheumaticum, erythema chronicum migrans [Lyme disease], and erythema gyratum repens).
How do you describe a skin lesion?
A lesion is any single area of altered skin. It may be solitary or multiple. A rash is a widespread eruption of lesions. Dermatosis is a generic term for a disease of the skin.
Can erythema multiforme spread?
Is Erythema Multiforme Contagious? No, the rash can’t spread from person to person. If an infection causes it, that infection can spread. But someone else who gets the infection may not get the rash too.
