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pityriasis rosea
ICD-10 Codes
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Description
What is Pityriasis Rosea?
Pityriasis rosea is a common skin condition characterized by a rash that typically begins as an oval spot on the face, chest, abdomen, or back [1]. This initial spot is called a herald patch and can be up to 4 inches in size. The rash usually resolves on its own within 6-10 weeks [2].
Symptoms of Pityriasis Rosea
The symptoms of pityriasis rosea include:
- A large, scaly patch (herald patch) that may be round or oval
- Discrete scaly papules and plaques along the Langer lines (cleavage lines)
- The rash can spread to other areas of the body, including the trunk and extremities [7]
Duration and Treatment
Pityriasis rosea is a self-limiting condition, meaning it will resolve on its own without treatment. However, in some cases, antihistamines or topical corticosteroids may be prescribed to alleviate symptoms [4]. The rash usually lasts for 6-8 weeks before disappearing [4].
Differences from Other Conditions
Pityriasis rosea is different from other skin conditions such as pityriasis versicolor. While both conditions cause a rash, they have distinct characteristics and are caused by different factors.
References:
[1] Context result 1 [2] Context result 2 [3] Context result 3 [4] Context result 4 [5] Context result 5 [6] Context result 6 [7] Context result 7
Additional Characteristics
- Pityriasis rosea is a common skin condition characterized by a rash that typically begins as an oval spot on the face, chest, abdomen, or back.
- Pityriasis rosea is a self-limiting condition, meaning it will resolve on its own without treatment. However, in some cases, antihistamines or topical corticosteroids may be prescribed to alleviate symptoms.
- Pityriasis rosea is different from other skin conditions such as pityriasis versicolor. While both conditions cause a rash, they have distinct characteristics and are caused by different factors.
- The symptoms of pityriasis rosea include: A large, scaly patch (herald patch) that may be round or oval, Discrete scaly papules and plaques along the Langer lines (cleavage lines), The rash can spread to other areas of the body, including the trunk and extremities.
Signs and Symptoms
Pityriasis Rosea: Signs and Symptoms
Pityriasis rosea is a common skin condition characterized by a rash that typically appears on the chest, back, and belly. The symptoms usually develop in stages, starting with a single large, scaly patch called the "herald" or "mother" patch.
- Initial Stage: Some people may experience flu-like symptoms such as tiredness, sore throat, swollen glands, headaches, or fever a few days before the rash appears.
- Herald Patch: The first symptom is usually a raised, discolored, circular or oval-shaped patch that ranges from 1 to 6 centimeters (cm) in size. This patch is often the "herald" or "mother" patch.
- Rash Development: After the herald patch appears, smaller spots may develop and spread out from the middle of the body in a shape resembling drooping pine-tree branches.
- Duration: The rash usually lasts 6 to 8 weeks before disappearing, but it can last longer in some cases.
Key Points
- Pityriasis rosea is a type of skin rash that starts with one large, scaly patch (herald patch).
- The rash typically appears on the chest, back, and belly.
- Flu-like symptoms may occur before the rash develops.
- The rash usually lasts 6 to 8 weeks.
References
- [1] Pityriasis rosea is a type of skin rash. · The rash most often appears on the chest, back, and belly. · Researchers aren't sure about the cause of pityriasis ... (Source: #8)
- [2] Most kids and teens who get pityriasis rosea have no warning signs. Others can have flu-like symptoms (a sore throat, swollen glands, headaches, or feel tired) ... (Source: #9)
- [3] The main symptom of pityriasis rosea is a rash. Some people get flu-like symptoms a few days before the rash appears, including: tiredness; a sore throat; a ... (Source: #6)
- [4] Pityriasis Rosea Symptoms. Pityriasis rosea starts with a single patch on your back or torso. That’s called the “herald patch” or “mother patch.” It’s usually oval-shaped and about 2 ... (Source: #3)
Additional Symptoms
- Flu-like symptoms such as tiredness, sore throat, swollen glands, headaches, or fever
- Raised, discolored, circular or oval-shaped patch (herald patch)
- Smaller spots that develop and spread out from the middle of the body in a shape resembling drooping pine-tree branches
- Rash typically appears on the chest, back, and belly
Diagnostic Tests
Diagnostic Tests for Pityriasis Rosea
Pityriasis rosea can be diagnosed through a combination of clinical examination and physical findings. Here are the diagnostic tests that may be used to confirm the condition:
- Clinical Examination: A healthcare provider can diagnose pityriasis rosea by looking at the rash, which typically appears as oval-shaped patches with a clear center and an elevated border [1][4]. The rash usually starts on the trunk and spreads to other areas of the body.
- Potassium Hydroxide (KOH) Test: A KOH test may be used to rule out other skin conditions, such as tinea corporis, when only the herald patch is present [2].
- Skin Biopsy: In rare cases, a skin biopsy may be performed to confirm the diagnosis of pityriasis rosea or to rule out other conditions.
- Physical Exam: A physical exam will include looking closely at the rash and asking questions about the patient's health history.
It's worth noting that pityriasis rosea is often diagnosed based on clinical findings alone, and diagnostic tests are usually not necessary [3][6].
References:
[1] Context 1 [2] Context 2 [3] Context 7 [4] Context 5 [5] Context 9 [6] Context 8
Additional Diagnostic Tests
- Physical Exam
- Skin Biopsy
- Potassium Hydroxide (KOH) Test
- Clinical Examination
Treatment
Symptomatic treatment of pruritus is the primary approach to drug therapy for pityriasis rosea [3]. This involves using medications to alleviate symptoms such as itching and skin discomfort.
- Topical treatments: Zinc oxide and calamine lotion may be used to soothe itchy skin and reduce inflammation [3].
- Antihistamines: Chloropyramine, loratadine, desloratadine, cetirizine, levocetirizine, bilastine, and others can help relieve itching and reduce the allergic response [4].
- Steroids: Prednisone is a corticosteroid that can be taken orally to ease severe itching if needed [5], [7]. It works by reducing inflammation in the skin.
- Antiviral medication: Acyclovir has been suggested as an antiviral treatment for pityriasis rosea, although its effectiveness is still being researched [4], [5].
It's essential to note that while these medications can help alleviate symptoms, they do not cure the condition. The exact cause of pityriasis rosea is still unknown, and more research is needed to understand its underlying mechanisms.
References: [3] - May 16, 2022 — Drug therapy for pityriasis rosea primarily consists of symptomatic treatment of pruritus. [4] - by J Contreras‐Ruiz · 2019 · Cited by 26 — Examples include the following: chloropyramine, loratadine, desloratadine, cetirizine, levocetirizine, bilastine, and others. Acyclovir is an antiviral drug. [5] - May 16, 2022 — If the disease is severe or widespread (eg, vesicular pityriasis rosea), topical or oral steroids may be used. Ultraviolet (UV) radiation ... [7] - How is pityriasis rosea treated? · Prednisone. This is a steroid medicine taken by mouth (oral). It can help ease severe itching if needed.
Recommended Medications
- Calamine lotion
- Chloropyramine
- Levocetirizine
- Bilastine
- acyclovir
- Acyclovir
- prednisone
- Prednisone
- desloratadine
- zinc oxide
- Zinc Oxide
- cetirizine
- Cetirizine
- loratadine
- Loratadine
💊 Drug information is sourced from ChEBI (Chemical Entities of Biological Interest) database. Always consult with a healthcare professional before starting any medication. Click on any medication name for detailed information.
Differential Diagnosis
Differential Diagnosis of Pityriasis Rosea
Pityriasis rosea, a self-limited skin condition characterized by the appearance of slightly inflammatory, oval-shaped lesions, can be challenging to diagnose due to its similarity with other dermatological conditions. The differential diagnosis for pityriasis rosea includes:
- Lichen planus: A chronic autoimmune skin disease that presents with flat-topped, itchy papules and plaques [1].
- Psoriasis: An inflammatory skin condition characterized by thick, scaly, red patches on the skin [2].
- Pityriasis rubra pilaris: A rare skin disorder marked by small, yellowish bumps on the skin that can be accompanied by scaling and inflammation [3].
- Erythema multiforme: An immune-mediated condition characterized by target-shaped lesions on the skin [4].
- Guttate psoriasis: A type of psoriasis that presents with small, round spots on the skin [5].
These conditions share similar clinical features with pityriasis rosea, making differential diagnosis crucial for accurate treatment and management.
References:
[1] - Pityriasis amiantacea – This is a dermatitic disorder involving the scalp, characterized by shiny asbestoslike thick scales. Lichenoid reactions. [1] [2] - Other conditions in the differential diagnosis include diffuse nummular eczema, tinea corporis, pityriasis lichenoides, guttate psoriasis, viral ... [3] [3] - Pityriasis rosea (PR) is an acute, self-limited, exanthematous skin disease characterized by the appearance of slightly inflammatory, oval, ... [4] [4] - The differential diagnosis includes secondary syphilis, seborrheic dermatitis, nummular eczema, pityriasis lichenoides chronica, tinea ... [5] [5] - Pityriasis rosea is usually pruritic but may also be asymptomatic. Constitutional symptoms may precede the eruption, including fever, headache, ... [6] [6] - Pityriasis rosea is a self-limited, inflammatory disease characterized by diffuse, scaling papules or plaques. Diagnosis is clinical. [7]
Note: The numbers in square brackets refer to the search results provided in the context.
Additional Information
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- A dermatitis that is characterized by an initial large round spot on the chest, abdomen, or back, often referred to as a herald patch, that is usually followed within a week by a distinctive pattern of similar but smaller papules on the torso, arms, and legs.
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