Pemphigus – The Pathology of One of the Rarest Autoimmune Diseases
Our body is designed to function correctly. However, there are cases where our immune system attacks the body’s cells, causing so-called autoimmune diseases. Many of these are very rare, affecting only a small percentage of the global population. An example of such a disease is pemphigus.
What is pemphigus? It is a group of autoimmune conditions that affect the skin and/or mucous membranes. Its main manifestation consists of the appearance of lesions or blisters that do not heal. Although it has been studied for a long time, the causes of its appearance have not been fully established, especially since the disease has several types. Also, once it sets in, it does not heal and can only be kept under control.
How do we differentiate pemphigus from other skin diseases? The only way is to go to one or more doctors, who can diagnose us after medical investigations. The article below presents the causes, symptoms, and available treatment methods for this condition.
Pemphigus – Why Does This Rare Autoimmune Disease Occur?
Pemphigus is a rare autoimmune skin disease, with studies indicating it affects fewer than 2 out of 100,000 people. Most cases have been recorded in people between the ages of 40 and 60. But what are the causes of its appearance? Research has shown that it occurs when the immune system attacks the desmoglein protein in the skin and mucous membranes, which connects epithelial cells. When it sets in, these cells separate, leading to the formation of painful blisters.
As with other autoimmune diseases, this one is also caused by an abnormal immune system response. Therefore, if we ensure we have a strong immune system, our chances of preventing pemphigus increase significantly. How do we do this? Through a healthy lifestyle, meaning exercise, rest, and a balanced diet. We can also turn to various supplements for help.
One such supplement is Aronia and Pomegranate Juice, a product rich in vitamins, minerals, and antioxidants. These essential nutrients support overall health and strengthen the immune system. Also, consuming this juice helps strengthen the skin’s natural barrier, protecting it against environmental aggressions. Aronia is particularly rich in antioxidants, helping to prevent various conditions. On the other hand, pomegranate, although it also contains important antioxidants, is known for its major role in reducing stress, which can weaken the immune system.
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What are the symptoms of the skin disease pemphigus? The first and most important is the appearance of blisters on the skin and mucous membranes.
Pemphigus and its Symptoms
Pemphigus is quite unpleasant considering its symptoms. These can include the appearance of one of the following signs on the skin:
- fluid-filled blisters;
- swelling.
In most cases, they cause sores and an unpleasant appearance of the skin, which can cause pain, but can also affect our self-image. Pemphigus also attacks the mucous membranes of the eyes, nose, mouth, throat, and even the genitals. If left untreated, they can spread over the body and become infected.
In most cases, the first symptom of pemphigus is the appearance of blisters in the mouth. These can persist for a long time, even several months. Then, they can spread to the skin, affecting the face, scalp, as well as the chest and back. Because they break or rupture easily, they enlarge, causing skin peeling. The blisters are often painful, and when they break, we may observe pus discharge.
Factors Contributing to Pemphigus
Although low immunity is responsible for the onset of pemphigus, environmental and genetic factors can also contribute to its appearance. HLA genes that make up the immune system can create a predisposition to the condition in some cases. Also, certain medications can lead to its onset. Among these are:
- penicillin;
- piroxicam;
- certain medications that help normalize blood pressure;
- some non-steroidal anti-inflammatory drugs.
Based on the symptoms of pemphigus, we must know that the disease has several types. Therefore, it is very important to see a doctor for diagnosis.
Pemphigus – Types of the Disease
There are several types of pemphigus, depending on the manifestations of the disease. These are:
- pemphigus vulgaris;
- pemphigus foliaceus;
- pemphigus IgA;
- pemphigus vegetans;
- paraneoplastic pemphigus.
Although the symptoms of these types are similar in appearance, each has distinct causes that can only be identified through medical diagnosis. Given the rarity of the disease, differential diagnosis is frequently used to rule out other similar conditions.
Pemphigus Vulgaris
Pemphigus vulgaris is the most common type of this skin disease, but it has two other forms:
- pemphigus vegetans;
- herpetiform pemphigus.
Pemphigus vulgaris occurs as a result of the immune system attacking the desmoglein protein in the skin and mucous membranes, which is the main cause of the disease. Desmogleins are the cells that hold epithelial tissue or skin together. When our immune system has an aggressive response, they separate through the process of acantholysis. Thus, blisters and swellings that are often painful appear. Viral infections that weaken our immunity are also another triggering factor.
Pemphigus vulgaris often occurs in adults between the ages of 40 and 60, belonging to certain ethnic groups. Among these are Eastern European groups. Therefore, Romanians are predisposed to this disease.
What do we feel when this type of pemphigus appears? First of all, it settles in the oral mucosa. There, painful and purulent blisters form, making eating and drinking difficult. From the mouth, they spread to the skin, being very easy to rupture.
A symptom of this form of pemphigus is the Nikolsky sign, where the skin, although it looks normal, detaches quickly with friction or pressure.
Pemphigus Foliaceus
The next form of pemphigus is foliaceus. Compared to vulgaris, this is a milder type of the disease, usually appearing only on the skin. Therefore, it will not spread to the mucous membranes. This also has several types:
- endemic pemphigus;
- erythematous pemphigus or Senear-Usher syndrome;
- herpetiform pemphigus.
Compared to pemphigus vulgaris, pemphigus foliaceus occurs as a result of the autoimmune response to desmoglein 1 protein. Another unique characteristic is that it can occur in younger people. Also, endemic forms have been observed more in South American countries. There, one of the causes is the presence of black flies carrying various pathogens. In addition to these, certain HLA haplotypes (sets of genes inherited together from one parent) can lead to the development of the condition.
What signs should we expect in the case of pemphigus foliaceus? First, the appearance of blisters on the skin. These lesions rupture easily, forming crusts where they appeared. Initially, they develop on the face, scalp, and trunk, but they can also spread to other areas of the body.
Regarding this type of pemphigus, it is good to know that we can easily confuse it with dermatitis or psoriasis, as it also causes itching.
Paraneoplastic Pemphigus
This form of pemphigus is often associated with oncological diseases such as leukemia or lymphoma. It affects both mucous membranes and skin, being the most severe type of the condition.
Because it occurs against the background of cancer, the immune system’s response is to produce antibodies that attack proteins in the skin and mucous membranes. A peculiarity of it is that, in most cases, it occurs in people suffering from non-Hodgkin lymphoma and chronic lymphocytic leukemia. However, it is not excluded that it may also affect women suffering from breast cancer or people with sarcoma or bronchial carcinoma. Like other types of pemphigus, it is more common in adults.
Among the symptoms of paraneoplastic pemphigus are the appearance of:
- lesions in the oral, pharyngeal, esophageal mucous membranes;
- blisters in the nose, mouth, and genitals;
- erosions on clean skin or skin already affected by certain rashes.
Also in this form of pemphigus, onycholysis, nail discoloration, and destruction of the nail bed can occur.
How is pemphigus diagnosed and treated? As evident from the information presented above, this skin condition is quite complex and often requires differential diagnosis to be correctly identified.
Pemphigus Disease – Diagnosis and Treatment
In the first phase, pemphigus can be confused with other diseases, including psoriasis, dermatitis, lupus, and Hailey-Hailey disease. That is why differential diagnosis is used to establish the exact condition we are suffering from.
What Differential Diagnosis in Pemphigus Entails
Differential diagnosis in the case of pemphigus involves comparing the patient’s symptoms with the clinical pictures of other diseases. In this way, those that do not correspond to the signs presented by the affected person will be eliminated. Then, certain tests will be performed to help establish the condition.
The first investigation performed when the doctor suspects pemphigus is anamnesis. In this stage, it will be checked if the patient is taking certain medications that can cause the disease. Then, a skin biopsy will be performed. The sample will be taken from a blister.
Other investigations that can be performed include:
- blood tests to identify antibodies in the blood, especially those that can cause pemphigus;
- endoscopy to check for lesions in the pharynx.
In addition to these, certain investigations can be performed to detect the types of cancers mentioned above, especially in people known to be healthy. For those affected by oncological diseases, blood tests can be conclusive.
Pemphigus Treatment
The treatment for this disease can be simpler or more complex, depending on its form. However, progress has been made regarding pemphigus, making it easier to treat. Among the medications prescribed for this condition are:
- oral corticosteroids;
- immunosuppressive drugs;
- steroid injections.
Pemphigus is not a skin disease that heals, so medication will be adjusted for the rest of the patient’s life. If at the beginning certain medications may be prescribed in high doses, they will be reduced as symptoms decrease. To avoid worsening the condition, it is important to take care of both skin and immune system health.
In conclusion, what is pemphigus? It is an autoimmune skin disease that manifests through the appearance of pus-filled blisters on both the skin and mucous membranes. It has several types, the most common being vulgaris, foliaceus, and paraneoplastic. The main cause of its appearance is the immune system’s response to the desmoglein protein that binds skin cells. In the case of paraneoplastic pemphigus, certain cancers can cause the disease. Because it resembles other dermatological conditions, its diagnosis can be quite difficult. A distinguishing sign, however, is that the lesions persist for quite some time and break easily. Also, they are painful in most cases. To find out what disease it is, differential diagnosis can be used, with the help of which the treatment protocol can also be established. Often, it consists of administering corticosteroids, as well as immunosuppressive drugs to reduce the immune system’s violent response to desmoglein.
References:
https://my.clevelandclinic.org/health/diseases/21130-pemphigus
https://www.ncbi.nlm.nih.gov/books/NBK546694/
https://www.mayoclinic.org/diseases-conditions/pemphigus/symptoms-causes/syc-20350404
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10245244/
https://www.webmd.com/skin-problems-and-treatments/what-is-pemphigus
https://jamanetwork.com/journals/jamadermatology/fullarticle/2728816
www.pemphigus.org/p-p-clinical-information/
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