Pityriasis Rosea is a viral skin rash that lasts up to 12 weeks. Usually, it manifests as herald patches and then tiny oval-shaped red patches. They normally occur on the back and chest. Pityriasis is a harmless disease that may cause an itchy sensation in a person's arms, legs and neck.
Normally, it starts as a huge, oval, pink and scaly patch that is about two inches long. Its middle part resembles a salmon. A dark pink ring surrounds the herald patch and it causes some people to misinterpret it as a symptom of ringworm attack. Some dermatologists refer to the large patch as a mother patch and the smaller ones as daughter patches. Often, the rash disappears after a while. If it occurs during pregnancy, you should inform your doctor. The viral rash is common among people between 10-35 years.
Pityriasis Rosea doesn't have a definite cause. Some research indicates that a viral infection, particularly herpes 6 and 7 viruses, usually trigger it, nevertheless, it doesn't have any direct relation with the herpes virus. The viruses cause the rosella rash in newborns. In some instances, vaccines and influenza viruses trigger the viral rash.
Pityriasis can also be as a result of a person's physiological reaction to a certain medication. Some enzyme inhibitors which convert angiotensin, anti-inflammatory drugs, imatinib clozapine, atypical antipsychotics and terbinafine can also cause Pityriasis eruptions.
Typically, Pityriasis heals within 10 to 12 weeks. Some pale brown marks may persist for some months in dark-skinned people. Eventually, their skin color changes to its normal state. It's rare to have a second attack of Pityriasis Rosea, nevertheless, a different viral infection can cause it to occur after several years.
Does Pityriasis Rosea Cause any Serious Complications?
During early pregnancy, a Pityriasis Rosea infection causes miscarriages in some women. It also results in prenatal complications including premature delivery. A Pityriasis recurrence due to herpes 6 or 7 infection causes severe cutaneous reactions that lead to the drug hypersensitivity syndrome. Pityriasis is known to cause mild complications such as persistent itching and brown patches once it heals.
It is the initial sign of a Pityriasis infection. A single patch occurs on an individual's skin where it lasts for two weeks. With time, it enlarges and causes a scaly sensation. Light skinned people may notice a pink patch while dark-skinned people may spot a dark grey or violet patch on their skin. Some physicians also refer to it as a herald patch. It has a diameter of 5cm and a scale trailing its edge.
Two weeks after getting the infection, many are visible on a patient's skin. They are normally smaller than the mother patch. You may see them on your arms, abdomen, back, legs and chest. Others may develop on your face, neck and oral cavity. Typical daughter patches have an oval shape. If you develop many patches, some may form a pattern on your back which resembles a Christmas tree.
Several days after the mother patch occurs, one may develop scaly patches or plaques on the back and chest. Some plaques normally occur on the neck, upper arms and thighs. The secondary lesions are tiny compared to a mother patch. Also, they have an oval shape and a dry layer. Just like a herald patch, the plaques might have an inner ring of scaling. Moreover, others are ring-shaped.
It's rare to find patches on a person's palms, scalp, and soles.
You might develop an itch on your skin. About 50% of Pityriasis Rosea patients develop a persisting itch which may worsen as the skin warms up, such as during a workout session.
A standard Pityriasis Rosea diagnosis normally occurs in a certified clinic. It's prudent to get diagnosed if you discover subacute dermatitis during an ordinary skin biopsy. The diagnosis provides useful information on how to get rid of Pityriasis Rosea. It's common to experience eosinophils if you develop a drug-triggered Pityriasis Rosea.
Also, it's not common to have an HHV6 blood test since almost all people with herpes 6 and 7 viruses during childhood don't produce reliable results. Sometimes, a dermatologist sends several fungal scrapings for mycology to detect any fungal infection.
Usually, a trained dermatologist performs the diagnosis. Often, it's easy for them to recognize the rash. In some people, it appears like a different skin disease or a ringworm attack. The dermatologist may have to perform additional tests to ascertain that indeed you have a Pityriasis Rosea infection. Furthermore, they may have to take blood or skin samples.
Pityriasis Rosea normally dissipates on its own. The rash may last for about eight weeks before disappearing. If one has a nagging itch, the dermatologist might prescribe certain medication to ease the itchiness. They include a one week course of acyclovir and a two-week dose of oral erythromycin.
It's advisable to visit a doctor after the viral rash lasts for more than a month. Your doctor enlightens you on how to get rid of Pityriasis Rosea.