Charcot-Marie-Tooth Disease with Palmoplantar Keratoderma and Nail Dystrophy

Last updated: February 8, 2026Reviewed date: February 8, 2026Reading time: 5 min read
Patient Tools

Read, save, and share this guide

Use these quick tools to make this medical article easier to read, print, save, or share with a family member.

On this page4 sections

Article Summary

Charcot-Marie-Tooth disease with palmoplantar keratoderma and nail dystrophy, abbreviated as CMT-PKN, is a rare genetic disorder that affects the nerves, skin, and nails. In this article, we'll break down this condition into simple terms to help you understand its causes, symptoms, diagnosis, and treatment options. Charcot-Marie-Tooth disease (CMT) is a group of genetic disorders that impact the peripheral nerves responsible for controlling muscle movement and...

Key Takeaways

  • This article explains Symptoms of CMT-PKN: in simple medical language.
  • This article explains Diagnostic Tests for CMT-PKN: in simple medical language.
  • This article explains Treatments for CMT-PKN: in simple medical language.
Before reading

RX Patient Tools

Use these quick guides before reading the article, or return to them when you need help preparing questions for a doctor.

Start here Choose the right pathway for symptoms, reports, medicines, or urgent warning signs. Disease article roadmap Read this topic step by step: meaning, symptoms, warning signs, diagnosis, treatment, prevention, and follow-up. Treatment planner Prepare questions about treatment choices, benefits, risks, side effects, and follow-up. Family & caregiver guide Organize symptoms, reports, medicines, questions, and follow-up safely. Nutrition & diet guide Prepare food, hydration, supplement, and medicine-timing questions safely. Prevention guide Organize risk factors, protective habits, screening, and warning signs. Recovery guide Prepare a safe plan for activity, rehabilitation, warning signs, and follow-up.
Educational health guideWritten for patient understanding and clinical awareness.
Reviewed content workflowUse writer and reviewer profiles for stronger trust.
Emergency safety firstUrgent warning signs are highlighted below.
Choose your reading view

Patient View highlights a simple learning journey. Clinical View reveals structure, evidence, and editorial completeness.

Definition

Charcot-Marie-Tooth disease with palmoplantar keratoderma and nail dystrophy, abbreviated as CMT-PKN, is a rare disorder that affects the nerves, skin, and nails. In this article, we’ll break down this condition into simple terms to help you understand its causes, symptoms, , and treatment options.

Charcot-Marie-Tooth disease (CMT) is a group of genetic disorders that impact the peripheral nerves responsible for controlling muscle movement and transmitting sensory information. CMT-PKN is a specific subtype of CMT characterized by additional features like palmoplantar keratoderma (thickened skin on the palms and soles) and nail dystrophy (abnormal nails).

Causes of CMT-PKN:

  1. Genetic Mutations: CMT-PKN is primarily caused by genetic mutations. These mutations affect the genes responsible for nerve function, leading to abnormal nerve signals and various symptoms.
  2. Inheritance: CMT-PKN is often from one’s parents. It can follow an autosomal dominant, autosomal recessive, or X-linked inheritance pattern, depending on the specific gene mutations involved.

Symptoms of CMT-PKN:

  1. : Individuals with CMT-PKN may experience muscle , particularly in their lower limbs, making it difficult to walk and maintain balance.
  2. Foot Deformities: High arches or flat feet are common foot deformities in CMT-PKN, which can further affect mobility.
  3. Palmoplantar Keratoderma: Thickened and calloused skin on the palms and soles can cause discomfort and .
  4. Nail Dystrophy: Abnormal nail growth or appearance, such as thickened, brittle, or deformed nails, is a hallmark symptom.
  5. Sensory Changes: Some individuals may have reduced sensation in their limbs, leading to difficulties in feeling touch, heat, or cold.
  6. Foot Drop: Foot drop occurs when the muscles responsible for lifting the foot are weak, causing the toes to drag while walking.
  7. Balance Problems: Difficulty balancing can result from muscle weakness and sensory changes, increasing the risk of falls.
  8. : Symptoms of CMT-PKN may worsen over time, although the rate of progression can vary widely among individuals.

Diagnostic Tests for CMT-PKN:

  1. Examination: A doctor will assess your , symptoms, and perform a physical examination to look for characteristic signs of CMT-PKN.
  2. Electromyography (): EMG measures electrical activity in muscles and helps diagnose nerve-related problems.
  3. Nerve Conduction Studies (): NCS assesses the speed and strength of electrical signals traveling along nerves, aiding in the diagnosis of nerve damage.
  4. Genetic Testing: Genetic tests can identify specific mutations associated with CMT-PKN, confirming the diagnosis.
  5. Skin : A small skin sample may be taken to examine nerve endings and skin abnormalities.

Treatments for CMT-PKN:

While there is no cure for CMT-PKN, various treatments and interventions can help manage symptoms and improve quality of life.

  1. : Physical therapists can design exercise programs to improve muscle strength, mobility, and balance.
  2. Orthopedic Devices: Braces, orthotic devices, and shoe inserts can provide support and stability to those with foot deformities.
  3. Pain Management: Medications, such as pain relievers or anti- drugs, may help alleviate nerve pain.
  4. Occupational Therapy: Occupational therapists can assist with daily tasks and recommend adaptive devices.
  5. Surgery: In cases, surgical procedures may be considered to correct foot deformities or relieve nerve compression.
  6. Skin Care: Dermatologists can provide treatments for palmoplantar keratoderma, such as moisturizers and topical creams.

Drugs for CMT-PKN:

  1. Pain Medications: Over-the-counter pain relievers like ibuprofen or medications may be used to manage discomfort.
  2. Gabapentin: This medication can help alleviate nerve pain.
  3. Physical Therapy: While not a drug, physical therapy plays a crucial role in managing CMT-PKN.
  4. Antidepressants: Some antidepressants may be prescribed to manage pain and improve sleep.
  5. Anti-Anxiety Medications: These can help individuals cope with the emotional challenges of living with a condition.

Conclusion:

Charcot-Marie-Tooth disease with palmoplantar keratoderma and nail dystrophy (CMT-PKN) is a complex genetic disorder that affects the nerves, skin, and nails. While it cannot be cured, there are various treatments and therapies available to manage its symptoms and improve the quality of life for individuals living with this condition. If you suspect you or a loved one may have CMT-PKN, it’s essential to consult a healthcare professional for a proper diagnosis and tailored treatment plan. Remember, early intervention can make a significant difference in managing 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/resources/category/resources/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/

 

More from this topic
  1. Congenital Axonal Neuropathy with Encephalopathy

    DefinitionCongenital? axonal neuropathy? with encephalopathy is a very rare inherited? nerve disease that starts at birth or very soon after birth. “Congenital” means present from birth....

    March 10, 2026 • Rx Neurology (A - Z)
  2. C12orf65 Combined Oxidative Phosphorylation Deficiency

    DefinitionC12orf65 combined oxidative phosphorylation deficiency is a very rare genetic? disease that affects how the “power stations” of the cell (mitochondria) make energy. In this condition,...

    February 24, 2026 • Rx Autoimmune, Genetic and Rare Diseases (A - Z)
  3. Chromosome 8q21.11 Deletion Syndrome

    DefinitionChromosome 8q21.11 deletion syndrome? is a very rare genetic? condition. A small piece is missing (deleted) from the long arm (q arm) of chromosome 8, in...

    January 22, 2026 • Rx Autoimmune, Genetic and Rare Diseases (A - Z)
  4. Peroneal Muscular Atrophy of Demyelinating Type

    DefinitionPeroneal muscular atrophy? of demyelinating type is a long-term (chronic?) nerve disease where the protective covering of certain nerves (called myelin) slowly gets damaged. These nerves...

    January 6, 2026 • Rx Autoimmune, Genetic and Rare Diseases (A - Z)
  5. Inherited Dominant Hypertrophic Neuropathy

    DefinitionInherited? dominant hypertrophic neuropathy? is a long name for a group of nerve diseases where the covering of the nerves becomes thick and damaged because of...

    January 6, 2026 • Rx Autoimmune, Genetic and Rare Diseases (A - Z)
  6. Hereditary Motor and Sensory Neuropathy Type 1 (HMSN I)

    DefinitionHereditary? motor and sensory neuropathy? type 1 (HMSN I) is a genetic? disease that slowly damages the peripheral nerves. These nerves carry signals from the brain...

    January 6, 2026 • Rx Autoimmune, Genetic and Rare Diseases (A - Z)
  7. Charcot-Marie-Tooth Neuropathy Type 1 (CMT1)

    DefinitionCharcot-Marie-Tooth neuropathy? type 1 (CMT1) is a lifelong, inherited? nerve disease that mainly damages the “covering” (myelin) of the long nerves in the arms and legs....

    January 6, 2026 • Rx Autoimmune, Genetic and Rare Diseases (A - Z)
  8. Autosomal Dominant Demyelinating Charcot-Marie-Tooth Disease

    DefinitionAutosomal dominant demyelinating Charcot-Marie-Tooth disease is a long-term nerve disease that mainly damages the peripheral nerves, which are the nerves outside the brain and spinal cord?....

    January 6, 2026 • Top Global News
  9. Charcot-Marie-Tooth Disease Type I (CMT1)

    DefinitionCharcot-Marie-Tooth disease type I (CMT1) is a group of inherited? nerve diseases that damage the myelin, the “insulation” around the peripheral nerves. These nerves carry signals...

    January 6, 2026 • Rx Autoimmune, Genetic and Rare Diseases (A - Z)
  10. PMP2-Related Hereditary Motor and Sensory Neuropathy Type 1

    DefinitionPMP2-related hereditary? motor and sensory neuropathy? type 1 is a rare inherited? nerve disease that mainly affects the long nerves in the arms and legs. These...

    January 6, 2026 • Rx Autoimmune, Genetic and Rare Diseases (A - Z)
RX Clinical Pathway Engine

Continue through a complete learning pathway

Move from understanding the topic to symptoms, tests, treatment, medicines, monitoring, and prevention.

Search the complete library
  1. Understand the condition Begin with the essential facts and a clear explanation of the topic.
  2. Recognize symptoms Learn common symptoms, signs, and patterns of presentation.
  3. Know when to seek help Review urgent warning signs and when professional assessment may be needed.
  4. Understand causes and risks Explore causes, risk factors, mechanisms, and contributing conditions.
  5. Explore tests and diagnosis Learn how clinicians assess the condition and which investigations may be discussed.
  6. Learn treatment approaches Review general treatment categories and management principles.
  7. Understand medicines safely Continue to medicine education, uses, precautions, and monitoring.
  8. Plan monitoring and follow-up Understand monitoring, complications, rehabilitation, and follow-up learning.
  9. Review prevention and self-care Explore prevention, healthy routines, and questions to discuss with a clinician.

Conditions & Diseases

Background, symptoms, causes, diagnosis, and care.

Explore this library

Medicines

Uses, safety, monitoring, and related medicine knowledge.

Explore this library

Cancer Knowledge

Cancer types, screening, oncology, and treatment education.

Explore this library
Doctor visit helper

Prepare before seeing a doctor

A simple rural-patient checklist to help you explain symptoms clearly, ask better questions, and avoid unsafe self-treatment.

Safety note: This is not a prescription or diagnosis. For severe symptoms, pregnancy danger signs, children with serious illness, chest pain, breathing difficulty, stroke-like weakness, or major injury, seek urgent care.

Which doctor may help?

Start with a registered doctor or the nearest qualified health center.

What to tell the doctor

  • Write when the problem started and how it changed.
  • Bring old prescriptions, investigation reports, and current medicines.
  • Write allergies, pregnancy status, diabetes, kidney/liver disease, and major past illnesses.
  • Bring one family member if the patient is weak, elderly, confused, or a child.

Questions to ask

  • What is the most likely cause of my symptoms?
  • Which danger signs mean I should go to hospital quickly?
  • Which tests are necessary now, and which can wait?
  • How should I take medicines safely and what side effects should I watch for?
  • When should I come for follow-up?

Tests to discuss

  • Vital signs: temperature, pulse, blood pressure, oxygen saturation
  • Basic physical examination by a clinician
  • CBC, urine test, blood sugar, or imaging only when clinically needed

Avoid these mistakes

  • Do not use antibiotics, steroid tablets/injections, or strong painkillers without proper medical advice.
  • Do not hide pregnancy, kidney disease, ulcer, allergy, or blood thinner use.
  • Do not delay emergency care when danger signs are present.

Medicine safety and first-aid guide

This section is for patient education only. It does not replace a doctor, pharmacist, or emergency care.

Safe first steps

  • Avoid heavy lifting, sudden bending, and prolonged bed rest.
  • Use comfortable posture and gentle movement as tolerated.
  • Discuss physiotherapy, X-ray, or MRI only when clinically needed.

OTC medicine safety

  • For mild back pain, pain-relief medicine may be discussed with a doctor or pharmacist.
  • Avoid repeated painkiller use if you have kidney disease, stomach ulcer, uncontrolled blood pressure, or are taking blood thinners.

Avoid these mistakes

  • Do not start antibiotics without a proper medical decision.
  • Do not use steroid tablets or injections casually for quick relief.
  • Do not delay emergency care because of home remedies.

Get urgent help if

  • Back pain with leg weakness, numbness around private area, loss of urine/stool control, fever, cancer history, or major injury needs urgent care.
Medicine names, dose, and timing must be decided by a qualified clinician or pharmacist after checking age, pregnancy, allergy, other diseases, and current medicines.

For rural patients and family caregivers

Patient health record and symptom diary

Write your symptoms, medicines already taken, test results, and questions before visiting a doctor. This note stays on your device unless you print or copy it.

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: Charcot-Marie-Tooth Disease with Palmoplantar Keratoderma and Nail Dystrophy

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.