Targetoid: Difference between revisions

Latest revision as of 05:36, 16 February 2025

Targetoid Lesions[edit]

Targetoid lesions are a type of skin lesion characterized by a central zone of necrosis or blistering, surrounded by concentric rings of erythema and edema. These lesions are often associated with various dermatological conditions and can be indicative of underlying systemic diseases.

Characteristics[edit]

Targetoid lesions typically present as round or oval shapes with a central area that may appear darker or necrotic. The surrounding rings can vary in color, often displaying a gradient from red to purple. The appearance of these lesions is reminiscent of a target or bullseye, hence the name "targetoid."

Associated Conditions[edit]

Targetoid lesions are commonly associated with the following conditions:

Erythema multiforme: A hypersensitivity reaction often triggered by infections or medications, characterized by the presence of target lesions.
Stevens-Johnson syndrome: A severe mucocutaneous reaction that can present with targetoid lesions among other symptoms.
Lyme disease: The classic "bullseye" rash, or erythema migrans, is a type of targetoid lesion associated with this tick-borne illness.
Fixed drug eruption: A localized skin reaction to a medication that can result in targetoid lesions upon re-exposure.

Diagnosis[edit]

The diagnosis of targetoid lesions involves a thorough clinical examination and patient history. Dermatologists may perform a skin biopsy to confirm the diagnosis and rule out other conditions. Identifying the underlying cause is crucial for effective management and treatment.

Treatment[edit]

Treatment of targetoid lesions depends on the underlying cause. For example, in cases of erythema multiforme, removing the triggering factor and providing supportive care is essential. In drug-induced cases, discontinuation of the offending medication is necessary. Systemic treatments may include corticosteroids or immunosuppressive agents in severe cases.

Related Pages[edit]

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-'''Targetoid''' is a term used in [[dermatology]] to describe a skin lesion that has a target-like appearance. This can be seen in a variety of conditions, including [[erythema multiforme]], [[Lyme disease]], and [[herpes simplex virus]] infection.
+== Targetoid Lesions ==
-==Etiology==
+[[File:Harrows_Bristle_Board_Bullseye.JPG|thumb|right|A targetoid lesion resembles the concentric rings of a dartboard.]]
-Targetoid lesions can be caused by a variety of conditions. These include:
+Targetoid lesions are a type of skin lesion characterized by a central zone of necrosis or blistering, surrounded by concentric rings of erythema and edema. These lesions are often associated with various dermatological conditions and can be indicative of underlying systemic diseases.
-* [[Erythema multiforme]]: This is a skin condition that can cause targetoid lesions. It is often triggered by an infection or medication.
+=== Characteristics ===
-* [[Lyme disease]]: This is a bacterial infection that can cause a variety of symptoms, including targetoid lesions.
+Targetoid lesions typically present as round or oval shapes with a central area that may appear darker or necrotic. The surrounding rings can vary in color, often displaying a gradient from red to purple. The appearance of these lesions is reminiscent of a target or bullseye, hence the name "targetoid."
-* [[Herpes simplex virus]] infection: This is a viral infection that can cause targetoid lesions.
-==Clinical Presentation==
+=== Associated Conditions ===
+Targetoid lesions are commonly associated with the following conditions:
-Targetoid lesions typically present as round, red patches on the skin. They often have a darker red or purple center, surrounded by a lighter ring, and then another darker ring on the outside. This gives them a target-like appearance.
+* [[Erythema multiforme]]: A hypersensitivity reaction often triggered by infections or medications, characterized by the presence of target lesions.
+* [[Stevens-Johnson syndrome]]: A severe mucocutaneous reaction that can present with targetoid lesions among other symptoms.
+* [[Lyme disease]]: The classic "bullseye" rash, or erythema migrans, is a type of targetoid lesion associated with this tick-borne illness.
+* [[Fixed drug eruption]]: A localized skin reaction to a medication that can result in targetoid lesions upon re-exposure.
-==Diagnosis==
+=== Diagnosis ===
+The diagnosis of targetoid lesions involves a thorough clinical examination and patient history. Dermatologists may perform a skin biopsy to confirm the diagnosis and rule out other conditions. Identifying the underlying cause is crucial for effective management and treatment.
-The diagnosis of a targetoid lesion is typically made based on the clinical presentation. In some cases, a skin biopsy may be performed to confirm the diagnosis.
+=== Treatment ===
+Treatment of targetoid lesions depends on the underlying cause. For example, in cases of erythema multiforme, removing the triggering factor and providing supportive care is essential. In drug-induced cases, discontinuation of the offending medication is necessary. Systemic treatments may include corticosteroids or immunosuppressive agents in severe cases.
-==Treatment==
+== Related Pages ==
-The treatment of targetoid lesions depends on the underlying cause. For example, erythema multiforme may be treated with corticosteroids, while Lyme disease is typically treated with antibiotics.
-==See Also==
 * [[Dermatology]]
-* [[Erythema multiforme]]
+* [[Skin lesion]]
-* [[Lyme disease]]
+* [[Hypersensitivity reaction]]
-* [[Herpes simplex virus]]
+* [[Autoimmune disease]]
 [[Category:Dermatology]]
-[[Category:Skin conditions]]
-[[Category:Medical terminology]]
-{{stub}}