Types of Norwegian Scabies

Norwegian scabies, also known as crusted scabies, is a highly contagious skin condition caused by the Sarcoptes scabiei mite. Unlike typical scabies, Norwegian scabies can affect individuals with compromised immune systems, leading to severe infestations. In this article, we will provide simplified explanations of Norwegian scabies, its types, causes, symptoms, diagnostic tests, treatments, and drugs.

Types of Norwegian Scabies:

  1. Classic Norwegian Scabies: The most common form of Norwegian scabies, characterized by thick crusts of skin containing a large number of mites.
  2. Atypical Norwegian Scabies: A less severe form, where the crusts are thinner and contain fewer mites, making it more challenging to diagnose.

Causes of Norwegian Scabies:

  1. Sarcoptes Scabiei Mite: The primary cause of Norwegian scabies, these microscopic mites burrow into the skin and lay eggs, leading to infestation.
  2. Weakened Immune System: Individuals with weakened immune systems, such as the elderly or those with certain medical conditions, are more susceptible.
  3. Close Contact: Sharing living spaces, bedding, or clothing with an infected person can lead to transmission.
  4. Crowded Living Conditions: Overcrowded environments, such as nursing homes or prisons, can facilitate the spread of the mites.
  5. Prolonged Skin-to-Skin Contact: Direct and prolonged contact with an infected person can increase the risk of transmission.
  6. Poor Hygiene: Inadequate personal hygiene may contribute to the development and spread of Norwegian scabies.
  7. Age: The condition is more common in the elderly due to age-related changes in the skin.
  8. Medications: Some medications, such as corticosteroids or immunosuppressants, can weaken the immune system and increase susceptibility.

Symptoms of Norwegian Scabies:

  1. Thick, Crusted Skin: The hallmark symptom is the presence of thick, scaly, and crusted skin, often grayish or yellowish in color.
  2. Itching: Intense itching is common and can be more severe than in typical scabies.
  3. Rash: A widespread rash may develop, consisting of red, raised bumps.
  4. Scales and Crusts: The skin may become covered in scales and crusts, which can flake off and spread the mites.
  5. Discoloration: Skin discoloration or darkening can occur in affected areas.
  6. Fissures: Painful cracks or fissures in the skin may be present.
  7. Secondary Infections: Bacterial infections may develop due to breaks in the skin.
  8. Nail Abnormalities: Thickened, crumbly, or discolored nails can result from infestation.
  9. Hair and Scalp Involvement: Mites can infest the scalp and hair, leading to hair loss and crusted scalp lesions.
  10. Swelling: Swelling of lymph nodes near affected areas may occur.

Diagnostic Tests for Norwegian Scabies:

  1. Skin Scraping: A healthcare provider can perform a skin scraping to collect samples for microscopic examination to identify mites, eggs, or fecal matter.
  2. Dermatoscopy: A dermatoscope may be used to magnify skin lesions and assess for characteristic patterns.
  3. Biopsy: A skin biopsy can provide a deeper tissue sample for examination.
  4. Polymerase Chain Reaction (PCR): PCR tests can detect the presence of mite DNA in skin samples with high accuracy.
  5. Blood Tests: Blood tests can help identify underlying medical conditions that may have weakened the immune system.

Treatments for Norwegian Scabies:

  1. Topical Scabicides: Prescription-strength topical medications containing permethrin or benzyl benzoate are applied to the entire body to kill mites. Multiple applications may be necessary.
  2. Oral Medications: Ivermectin, an oral medication, may be prescribed for severe cases or when topical treatments are insufficient.
  3. Antihistamines: Over-the-counter or prescription antihistamines can help relieve itching.
  4. Antibiotics: If a secondary bacterial infection is present, antibiotics may be prescribed.
  5. Isolation: Infected individuals should be isolated to prevent the spread of mites to others.
  6. Laundering and Cleaning: Bedding, clothing, and personal items should be washed and cleaned to eliminate mites.
  7. Environmental Treatment: Homes and living spaces should be thoroughly cleaned and treated to eliminate mites that may have contaminated surfaces.

Drugs Used in the Treatment of Norwegian Scabies:

  1. Permethrin Cream: A topical medication that kills mites and their eggs.
  2. Benzyl Benzoate Lotion: Another topical scabicide that eliminates mites.
  3. Ivermectin: An oral medication that can be used in severe cases.
  4. Crotamiton Cream: A topical cream that helps relieve itching.
  5. Antihistamines: Over-the-counter antihistamines like cetirizine or prescription options may be recommended.
  6. Antibiotics: Prescription antibiotics like dicloxacillin or cephalexin may be prescribed for secondary infections.

Explanation of Details: Norwegian scabies, also called crusted scabies, is a highly contagious skin condition caused by tiny mites called Sarcoptes scabiei. These mites burrow into the skin, lay eggs, and trigger an inflammatory response, leading to the characteristic symptoms of the condition.

There are two main types of Norwegian scabies: classic and atypical. Classic Norwegian scabies presents with thick, crusted skin containing a large number of mites, while atypical cases have thinner crusts with fewer mites, making diagnosis more challenging.

The primary cause of Norwegian scabies is the Sarcoptes scabiei mite, but several factors can increase the risk of developing the condition. Individuals with weakened immune systems, such as the elderly or those taking immunosuppressive medications, are more susceptible. Close contact with an infected person and sharing living spaces, bedding, or clothing can facilitate transmission. Overcrowded living conditions, prolonged skin-to-skin contact, poor personal hygiene, and age-related skin changes can also contribute to the development of Norwegian scabies.

Symptoms of Norwegian scabies include thick, crusted skin, intense itching, a widespread rash, scales and crusts, skin discoloration, fissures, and the risk of secondary bacterial infections. Nail abnormalities and involvement of the scalp and hair can also occur.

Diagnosing Norwegian scabies involves various methods, such as skin scraping to collect mite samples, dermatoscopy to examine skin lesions, and skin biopsies for deeper tissue analysis. Polymerase Chain Reaction (PCR) tests and blood tests can provide additional diagnostic information.

Treatment options for Norwegian scabies include topical scabicides like permethrin or benzyl benzoate, which are applied to the entire body to kill mites. In severe cases or when topical treatments are ineffective, oral medication like ivermectin may be prescribed. Antihistamines can help alleviate itching, and antibiotics may be necessary if a bacterial infection develops. It is crucial to isolate infected individuals and clean and treat their living environment to prevent further spread.

Several drugs are used in the treatment of Norwegian scabies, including permethrin cream, benzyl benzoate lotion, ivermectin, crotamiton cream, antihistamines, and antibiotics for secondary infections.

Conclusion:

Norwegian scabies is a contagious skin condition caused by Sarcoptes scabiei mites. It primarily affects individuals with weakened immune systems and is characterized by thick, crusted skin, intense itching, and other skin abnormalities. Diagnosis involves various tests, and treatment typically includes scabicides, oral medications, and supportive care. Understanding the causes, symptoms, diagnostic methods, and treatments for Norwegian scabies is crucial for early detection and effective management of this condition.

 

Disclaimer: Each person’s journey is unique, treatment plan, life style, food habit, hormonal condition, immune system, chronic disease condition, previous medical  history is also unique. So always seek the best advice from a qualified medical professional or health care provider before trying any treatments to ensure to find out the best plan for you. This guide is for general information and educational purposes only. If you or someone are suffering from this disease condition bookmark this website or share with someone who might find it useful! Boost your knowledge and stay ahead in your health journey. Thank you for giving your valuable time to read the article.

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

References