Pityriasis rotunda: Difference between revisions
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{{Infobox medical condition | |||
| name = Pityriasis rotunda | |||
| synonyms = [[Pityriasis circinata]] | |||
| field = [[Dermatology]] | |||
| symptoms = Circular, scaly patches on the skin | |||
| complications = None typically | |||
| onset = Usually in adulthood | |||
| duration = Chronic | |||
| causes = Unknown, possibly genetic or environmental factors | |||
| risks = More common in individuals of [[African]], [[Asian]], or [[Mediterranean]] descent | |||
| diagnosis = Clinical examination, [[skin biopsy]] | |||
| differential = [[Tinea corporis]], [[Pityriasis rosea]], [[Psoriasis]] | |||
| treatment = [[Emollients]], [[keratolytics]], [[topical corticosteroids]] | |||
| prognosis = Benign, cosmetic concern | |||
| frequency = Rare | |||
}} | |||
'''Pityriasis rotunda''' is a rare, chronic skin condition characterized by perfectly circular, scaly patches with no inflammation. It is more common in people of African or Asian descent and is equally common in both men and women. The cause of pityriasis rotunda is unknown, but it has been associated with internal diseases, particularly those of the liver and cancer. | '''Pityriasis rotunda''' is a rare, chronic skin condition characterized by perfectly circular, scaly patches with no inflammation. It is more common in people of African or Asian descent and is equally common in both men and women. The cause of pityriasis rotunda is unknown, but it has been associated with internal diseases, particularly those of the liver and cancer. | ||
== Symptoms == | == Symptoms == | ||
The primary symptom of '''pityriasis rotunda''' is the appearance of large, perfectly round patches of dry, scaly skin. These patches are usually found on the trunk, arms, and legs, but can also appear on the face and neck. The patches are usually asymptomatic, but can sometimes cause mild itching. | The primary symptom of '''pityriasis rotunda''' is the appearance of large, perfectly round patches of dry, scaly skin. These patches are usually found on the trunk, arms, and legs, but can also appear on the face and neck. The patches are usually asymptomatic, but can sometimes cause mild itching. | ||
== Causes == | == Causes == | ||
The exact cause of '''pityriasis rotunda''' is unknown. However, it has been associated with a number of internal diseases, particularly those of the liver and cancer. Some researchers believe that the condition may be caused by a genetic mutation, while others believe that it may be an autoimmune disorder. | The exact cause of '''pityriasis rotunda''' is unknown. However, it has been associated with a number of internal diseases, particularly those of the liver and cancer. Some researchers believe that the condition may be caused by a genetic mutation, while others believe that it may be an autoimmune disorder. | ||
== Diagnosis == | == Diagnosis == | ||
'''Pityriasis rotunda''' is diagnosed based on the characteristic appearance of the skin lesions. A skin biopsy may be performed to confirm the diagnosis and to rule out other skin conditions that can cause similar symptoms. | '''Pityriasis rotunda''' is diagnosed based on the characteristic appearance of the skin lesions. A skin biopsy may be performed to confirm the diagnosis and to rule out other skin conditions that can cause similar symptoms. | ||
== Treatment == | == Treatment == | ||
There is no specific treatment for '''pityriasis rotunda'''. Treatment is usually aimed at managing the symptoms and may include the use of moisturizers and topical steroids. In some cases, the condition may resolve on its own without treatment. | There is no specific treatment for '''pityriasis rotunda'''. Treatment is usually aimed at managing the symptoms and may include the use of moisturizers and topical steroids. In some cases, the condition may resolve on its own without treatment. | ||
== See also == | == See also == | ||
* [[Dermatology]] | * [[Dermatology]] | ||
* [[Skin conditions]] | * [[Skin conditions]] | ||
* [[Autoimmune disorders]] | * [[Autoimmune disorders]] | ||
== References == | == References == | ||
<references /> | <references /> | ||
[[Category:Dermatology]] | [[Category:Dermatology]] | ||
[[Category:Skin conditions]] | [[Category:Skin conditions]] | ||
Latest revision as of 02:21, 4 April 2025
| Pityriasis rotunda | |
|---|---|
| Synonyms | Pityriasis circinata |
| Pronounce | N/A |
| Specialty | N/A |
| Symptoms | Circular, scaly patches on the skin |
| Complications | None typically |
| Onset | Usually in adulthood |
| Duration | Chronic |
| Types | N/A |
| Causes | Unknown, possibly genetic or environmental factors |
| Risks | More common in individuals of African, Asian, or Mediterranean descent |
| Diagnosis | Clinical examination, skin biopsy |
| Differential diagnosis | Tinea corporis, Pityriasis rosea, Psoriasis |
| Prevention | N/A |
| Treatment | Emollients, keratolytics, topical corticosteroids |
| Medication | N/A |
| Prognosis | Benign, cosmetic concern |
| Frequency | Rare |
| Deaths | N/A |
Pityriasis rotunda is a rare, chronic skin condition characterized by perfectly circular, scaly patches with no inflammation. It is more common in people of African or Asian descent and is equally common in both men and women. The cause of pityriasis rotunda is unknown, but it has been associated with internal diseases, particularly those of the liver and cancer.
Symptoms[edit]
The primary symptom of pityriasis rotunda is the appearance of large, perfectly round patches of dry, scaly skin. These patches are usually found on the trunk, arms, and legs, but can also appear on the face and neck. The patches are usually asymptomatic, but can sometimes cause mild itching.
Causes[edit]
The exact cause of pityriasis rotunda is unknown. However, it has been associated with a number of internal diseases, particularly those of the liver and cancer. Some researchers believe that the condition may be caused by a genetic mutation, while others believe that it may be an autoimmune disorder.
Diagnosis[edit]
Pityriasis rotunda is diagnosed based on the characteristic appearance of the skin lesions. A skin biopsy may be performed to confirm the diagnosis and to rule out other skin conditions that can cause similar symptoms.
Treatment[edit]
There is no specific treatment for pityriasis rotunda. Treatment is usually aimed at managing the symptoms and may include the use of moisturizers and topical steroids. In some cases, the condition may resolve on its own without treatment.
See also[edit]
References[edit]
<references />
