Acquired Perforating Collagenosis

Last updated: February 8, 2026Reviewed date: February 8, 2026Reading time: 10 min read
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Acquired Perforating Collagenosis
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Acquired perforating collagenosis is a rare skin condition that is characterized by the development of small, perforated sores on the skin. The condition is also known as Kyrle's disease, perforating folliculitis, or perforating dermatosis. It is considered to be an acquired condition, meaning that it...

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বাংলা রোগী নোট এখনো যোগ করা হয়নি। পোস্ট এডিটরে “RX Bangla Patient Mode” বক্স থেকে সহজ বাংলা সারাংশ যোগ করুন।

এই তথ্য শিক্ষা ও সচেতনতার জন্য। এটি ডাক্তারি পরীক্ষা, রোগ নির্ণয় বা প্রেসক্রিপশনের বিকল্প নয়।

Article Summary

Acquired perforating collagenosis is a rare skin condition that is characterized by the development of small, perforated sores on the skin. The condition is also known as Kyrle's disease, perforating folliculitis, or perforating dermatosis. It is considered to be an acquired condition, meaning that it develops over time and is not present at birth. The exact cause of acquired perforating collagenosis is unknown, but it...

Key Takeaways

  • This article explains Causes in simple medical language.
  • This article explains Symptoms in simple medical language.
  • This article explains Diagnosis in simple medical language.
  • This article explains Treatment in simple medical language.
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Definition

Acquired perforating collagenosis is a rare skin condition that is characterized by the development of small, perforated sores on the skin. The condition is also known as Kyrle’s disease, perforating folliculitis, or perforating dermatosis. It is considered to be an acquired condition, meaning that it develops over time and is not present at birth.

The exact cause of acquired perforating collagenosis is unknown, but it is believed to be related to factors such as chronic skin irritation, metabolic imbalances, and changes in the normal balance of skin cells. The condition is most commonly seen in middle-aged and elderly individuals, although it can occur at any age.

Causes

The exact cause of APC is still unknown, but it is believed to be related to a combination of genetic, environmental and lifestyle factors.

  1. Genetics:

APC has been shown to run in families, suggesting a genetic component to the development of the disorder. The genes involved in APC are still unknown, but research is underway to identify the specific genetic mutations responsible for the condition.

  1. Environmental factors:

Exposure to environmental toxins and pollutants has been linked to the development of APC. These include exposure to chemicals in the workplace, exposure to pesticides and herbicides, and exposure to heavy metals such as lead and mercury.

  1. Chronic diseases:

APC has been linked to a number of chronic illnesses, including insulin is low or not working well. সহজ বাংলা: রক্তে চিনি বেশি থাকার রোগ।" data-rx-term="diabetes" data-rx-definition="Diabetes is a condition where blood sugar stays too high because insulin is low or not working well. সহজ বাংলা: রক্তে চিনি বেশি থাকার রোগ।">diabetes, psoriasis, and lupus. The connection between these diseases and APC is still not well understood, but it is believed that the underlying infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।" data-rx-term="inflammation" data-rx-definition="Inflammation is the body’s response to injury, infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।">inflammation and oxidative stress associated with these conditions may play a role in the development of APC.

  1. Lifestyle factors:

Lifestyle factors such as smoking, alcohol consumption, and a poor diet have been linked to the development of APC. These factors can cause oxidative stress and infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।" data-rx-term="inflammation" data-rx-definition="Inflammation is the body’s response to injury, infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।">inflammation in the body, which can trigger the abnormal production of collagen in the skin.

  1. Medications:

Certain medications, such as retinoids and corticosteroids, have been linked to the development of APC. These medications can cause changes in the skin that lead to the formation of perforating skin lesions.

  1. Infections:

Infections, such as human papillomavirus (HPV), can cause changes in the skin that lead to the formation of perforating skin lesions. These infections can cause infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।" data-rx-term="inflammation" data-rx-definition="Inflammation is the body’s response to injury, infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।">inflammation and oxidative stress in the skin, which can trigger the abnormal production of collagen.

In conclusion, the exact cause of APC is still unknown, but it is believed to be related to a combination of genetic, environmental, lifestyle, and medical factors. Further research is needed to understand the underlying mechanisms of APC and to develop effective treatments for this debilitating skin disorder.

Symptoms

The main symptoms of this condition are perforations or holes in the skin, hyperkeratosis, and transepidermal elimination of collagen fibers. These symptoms can lead to significant discomfort and affect the quality of life of those affected. In this article, we will discuss the main symptoms of acquired perforating collagenosis in detail.

Perforations: The most prominent symptom of acquired perforating collagenosis is the presence of perforations or holes in the skin. These holes are usually round or oval-shaped and vary in size from a few millimeters to several centimeters in diameter. They are typically found on the legs, arms, and abdomen but can also occur on the face, neck, and other parts of the body. The perforations are usually asymptomatic, but some patients may experience pain or itching.

Hyperkeratosis: Hyperkeratosis is another common symptom of acquired perforating collagenosis. This refers to the thickening of the outermost layer of the skin, known as the stratum corneum. The hyperkeratosis can cause the skin to appear rough, scaly, and discolored. In severe cases, it can also lead to the formation of calluses or keratotic lesions.

Transepidermal elimination of collagen fibers: Transepidermal elimination of collagen fibers is another hallmark of acquired perforating collagenosis. This refers to the elimination of collagen fibers from the dermis to the epidermis. The elimination of these fibers can cause the skin to become thin and fragile, leading to the formation of perforations. This can also lead to the development of skin ulcerations or erosions.

Pruritus: Pruritus, or itching, is another common symptom of acquired perforating collagenosis. This can range from mild itching to severe, persistent itching that can be difficult to relieve. The itching can be caused by the presence of hyperkeratosis or the transepidermal elimination of collagen fibers. In some cases, the itching may be accompanied by burning or stinging sensations.

Pain: Pain can also be a symptom of acquired perforating collagenosis, particularly in cases where perforations are present. The pain may be mild or severe, and can be localized to the affected area or spread to other parts of the body. In some cases, the pain may be accompanied by swelling or redness.

Infection: Acquired perforating collagenosis can also increase the risk of skin infections. The perforations and thinning of the skin can allow bacteria and other pathogens to enter, leading to the development of infections. These infections can range from minor skin infections to serious, life-threatening infections such as sepsis.

Psychological impact: Acquired perforating collagenosis can also have a significant psychological impact on those affected. The appearance of the skin, with its perforations and hyperkeratosis, can be distressing and embarrassing. This can lead to feelings of low self-esteem, anxiety, and depression.

In conclusion, acquired perforating collagenosis is a rare skin disorder characterized by perforations, hyperkeratosis, and transepidermal elimination of collagen fibers. These symptoms can lead to significant discomfort and affect the quality of life of those affected. If you experience any of these symptoms, it is important to seek medical attention as soon as possible to receive a proper diagnosis and treatment.

Diagnosis

The perforations result from the abnormal formation and accumulation of collagen fibers in the skin. APC affects people of all ages, but it is more common in middle-aged adults.

Diagnosis

The diagnosis of APC is based on the clinical appearance of the skin and nails. A dermatologist can usually make the diagnosis by looking at the affected skin and observing the perforations. The dermatologist may also perform a biopsy of the affected skin to confirm the diagnosis.

Tests

There are several tests that can be performed to diagnose APC, including:

  1. Skin biopsy: This is the most commonly used test to diagnose APC. A small sample of skin is taken and examined under a microscope to confirm the presence of abnormal collagen fibers.
  2. Nail biopsy: This test is used to diagnose APC in patients who have nail perforations. A small sample of the affected nail is taken and examined under a microscope to confirm the presence of abnormal collagen fibers.
  3. Histology: This test is used to examine the structure of the skin and nails. It involves taking a sample of the affected skin or nail and examining it under a microscope to determine the presence of abnormal collagen fibers.
  4. Direct immunofluorescence: This test is used to determine the presence of autoantibodies in the skin. It involves taking a small sample of the affected skin and staining it with a special dye. The presence of autoantibodies is indicated by a positive result.
  5. Indirect immunofluorescence: This test is used to determine the presence of autoantibodies in the serum. It involves taking a sample of the patient’s blood and staining it with a special dye. The presence of autoantibodies is indicated by a positive result.

Treatment

It is characterized by the formation of small, painful papules or nodules that eventually break down, forming small holes or perforations in the skin. APC is caused by an abnormal accumulation of collagen in the skin, leading to the formation of these perforations.

The main medical treatment for APC is aimed at reducing the symptoms and preventing the formation of new perforations. The following are the most common treatments for APC:

  1. Topical corticosteroids

Topical corticosteroids are the first line of treatment for APC. These medications are applied directly to the skin and help to reduce infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।" data-rx-term="inflammation" data-rx-definition="Inflammation is the body’s response to injury, infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।">inflammation and swelling. They also help to reduce the formation of new perforations and prevent the progression of the disease.

  1. Systemic corticosteroids

In more severe cases of APC, systemic corticosteroids may be prescribed. These medications are taken orally and work by suppressing the immune system, reducing inflammation and swelling throughout the body. However, they can have significant side effects and should only be used under the supervision of a doctor.

  1. Antibiotics

Antibiotics may be prescribed to prevent or treat infections that can occur as a result of the perforations in the skin. They may be applied topically or taken orally, depending on the severity of the infection.

  1. Retinoids

Retinoids are a class of medications that are derived from Vitamin A. They have been shown to be effective in the treatment of APC by reducing the accumulation of collagen in the skin. They are usually taken orally, and can have significant side effects, so they should only be used under the supervision of a doctor.

  1. Dermabrasion

Dermabrasion is a cosmetic procedure that involves removing the top layer of skin using a high-speed rotating brush. This procedure can be used to remove the perforations in the skin and improve the appearance of the affected areas.

  1. Surgical excision

In severe cases of APC, surgical excision may be necessary to remove the affected areas of skin. This procedure is usually reserved for the most severe cases and may result in scarring.

In addition to these treatments, there are also a number of home remedies that can be used to manage the symptoms of APC. These include:

  1. Keeping the affected area clean and dry

Keeping the affected area clean and dry can help to reduce the risk of infection and prevent the formation of new perforations. This can be achieved by gently washing the area with soap and water and applying a moisturizer to keep the skin hydrated.

  1. Using a bandage or dressing

Using a bandage or dressing can help to protect the affected area from further damage and prevent the formation of new perforations.

  1. Avoiding harsh soaps and skin products

Avoiding harsh soaps and skin products can help to reduce the risk of irritation and prevent the formation of new perforations.

  1. Avoiding exposure to the sun

Avoiding exposure to the sun can help to prevent the skin from becoming dry and irritated, reducing the risk of new perforations.

In conclusion, the main medical treatment for APC is aimed at reducing the symptoms and preventing the formation of new perforations. This may involve the use of topical or systemic corticosteroids, antibiotics, retinoids, dermabrasion, or surgical excision. In addition to these treatments, there are also

  1. https://www.ncbi.nlm.nih.gov/books/NBK11733/
  2. https://www.ncbi.nlm.nih.gov/books/NBK208/
  3. https://www.ncbi.nlm.nih.gov/books/NBK212/
  4. https://www.ncbi.nlm.nih.gov/books/NBK92761/
  5. https://www.ncbi.nlm.nih.gov/books/NBK11733/
  6. https://www.nccih.nih.gov/health/skin-conditions-at-a-glance
  7. https://www.aad.org/public/diseases/a-z
  8. https://medlineplus.gov/skinconditions.html
  9. https://www.aad.org/about/burden-of-skin-disease
  10. https://www.usa.gov/federal-agencies/national-institute-of-arthritis-musculoskeletal-and-skin-diseases
  11. https://www.cdc.gov/niosh/topics/skin/default.html
  12. https://www.skincancer.org/
  13. https://www.jaad.org/
  14. https://www.psoriasis.org/about-psoriasis/
  15. https://books.google.com/books?
  16. https://www.niams.nih.gov/health-topics/skin-diseases
  17. https://cms.centerwatch.com/directories/1067-fda-approved-drugs/topic/292-skin-infections-disorders
  18. https://www.fda.gov/files/drugs/published/Acute-Bacterial-Skin-and-Skin-Structure-Infections—Developing-Drugs-for-Treatment.pdf
  19. https://dermnetnz.org/topics
  20. https://www.aaaai.org/conditions-treatments/allergies/skin-allergy
  21. https://www.sciencedirect.com/topics/medicine-and-dentistry/occupational-skin-disease
  22. https://aafa.org/allergies/allergy-symptoms/skin-allergies/
  23. https://www.nibib.nih.gov/
  24. https://rxharun.com/resources/category/resources/rxharun/article-types/skin-care-beauty/skin-diseases-types-symptoms-treatment/
  25. https://www.nei.nih.gov/
  26. https://en.wikipedia.org/wiki/List_of_skin_conditions
  27. https://en.wikipedia.org/?title=List_of_skin_diseases&redirect=no
  28. https://en.wikipedia.org/wiki/Skin_condition
  29. https://oxfordtreatment.com/
  30. https://www.nidcd.nih.gov/health/
  31. https://consumer.ftc.gov/articles/w
  32. https://www.nccih.nih.gov/health
  33. https://catalog.ninds.nih.gov/
  34. https://www.aarda.org/diseaselist/
  35. https://www.ninds.nih.gov/Disorders/Patient-Caregiver-Education/Fact-Sheets
  36. https://www.nibib.nih.gov/
  37. https://www.nia.nih.gov/health/topics
  38. https://www.nichd.nih.gov/
  39. https://www.nimh.nih.gov/health/topics
  40. https://www.nichd.nih.gov/
  41. https://www.niehs.nih.gov
  42. https://www.nimhd.nih.gov/
  43. https://www.nhlbi.nih.gov/health-topics
  44. https://obssr.od.nih.gov/
  45. https://www.nichd.nih.gov/health/topics
  46. https://rarediseases.info.nih.gov/diseases
  47. https://beta.rarediseases.info.nih.gov/diseases
  48. https://orwh.od.nih.gov/

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Doctor to discuss: Doctor / qualified healthcare provider
Tests to discuss with doctor
  • Basic vital signs: temperature, pulse, blood pressure, oxygen level if needed
  • Relevant blood, urine, imaging, or specialist tests only after clinical assessment
Questions to ask
  • What is the most likely cause of my symptoms?
  • Which warning signs mean I should go to emergency care?
  • Which tests are really needed now?
  • Which medicines are safe for my age, pregnancy status, allergy, kidney/liver/stomach condition, and current medicines?

Emergency warning signs such as chest pain, severe breathing difficulty, sudden weakness, confusion, severe dehydration, major injury, or loss of bladder/bowel control need urgent medical care. Do not wait for online information.

Safe pathway to proper treatment

Care roadmap for: Acquired Perforating Collagenosis

Use this simple roadmap to understand the next safe steps. It is educational and does not replace examination by a doctor.

Go to emergency care if you notice:
  • Severe or rapidly worsening symptoms
  • Breathing difficulty, chest pain, fainting, confusion, severe weakness, major injury, or severe dehydration
Doctor / service to discuss: Qualified healthcare provider; specialist depends on symptoms and examination.
  1. Step 1

    Check danger signs first

    If danger signs are present, seek emergency care and do not wait for online information.

  2. Step 2

    Record the symptom story

    Write when symptoms started, severity, medicines already taken, allergies, pregnancy status, and test results.

  3. Step 3

    Visit a qualified clinician

    A doctor, nurse, or qualified healthcare provider can examine you and decide which tests or treatment are needed.

  4. Step 4

    Do only useful tests

    Do tests after clinical assessment. Avoid unnecessary tests, random antibiotics, or repeated medicines without diagnosis.

  5. Step 5

    Follow up and return early if worse

    If symptoms worsen, new warning signs appear, or treatment is not helping, return for review quickly.

Rural patient practical tips
  • Take a written symptom diary and all previous prescriptions/test reports.
  • Do not hide medicines already taken, even herbal or over-the-counter medicines.
  • Ask which warning signs mean urgent referral to hospital.

This roadmap is for education. A real diagnosis and treatment plan requires history, examination, and clinical judgment.

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