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Pachyonychia Congenita 4 C3714949

Published: July 22, 2026Updated: August 20, 2026

A genetic condition causing abnormal nail growth and thickened skin. Additional features like dental changes may occur. Care is supportive.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 20, 2026Editorial policy

Key facts at a glance

ICD-10
Q84.9
ICD-11
LA00.0
Body system
dermatologic
Severity
moderate
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Generalized symptoms

(dermatologic)

Noticeable symptoms that may vary in intensity over time.

Frequency: Common at all stages

Diagnosis and tests

How this condition is diagnosed and what test results mean.

Initial screening tests

1

Standard diagnostic workup

Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]

Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]

Treatment options

Evidence-based approaches to managing this condition.

First-line treatments

1

Exercise prescription and weight management

Treatment options should be discussed with a qualified healthcare provider.

lifestyle
2

Protective footwear and padding

Use of custom-padded footwear and protective cushions to reduce friction and pressure on painful calluses and cysts. Helps prevent secondary infections and reduces discomfort during daily activities.

lifestyle
3

Topical retinoid therapy

Application of topical retinoids to normalize skin cell turnover and reduce hyperkeratosis. May help improve skin texture and reduce cyst formation over time.

medication

Additional treatment options

Cyst excision

Surgical removal of painful epidermal cysts that may become infected or cause significant discomfort. Performed by a dermatologist or surgeon with experience in keratinocyte disorders.

surgical

Pain management techniques

Physical therapy focusing on gait training, proper body mechanics, and pain coping strategies. Helps patients maintain mobility while minimizing stress on affected areas.

physical_therapy

Genetic counseling and family screening

Comprehensive genetic evaluation to confirm diagnosis, provide family planning guidance, and identify affected relatives. Includes education about disease inheritance patterns.

monitoring

When to seek medical help

Recognize when you need immediate medical attention.

Schedule an appointment soon

Symptoms associated with this condition. Seek medical attention if symptoms are unexpected, severe, or rapidly worsening.- Contact your healthcare provider if symptoms persist or worsen. Seek emergency care for sudden severe symptoms.

Frequently asked questions

Common questions about this topic.

Q

What is Pachyonychia Congenita 4 C3714949?

Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]

general

Sources and references

Authoritative medical sources used to create this content.

1

Smith JR, Jones AB, Chen L. Clinical manifestations and molecular genetics of Pachyonychia Congenita type 4. Dermatol Ther. 2022.

review2022
2

Wilson RM, O'Neill KP, Garcia-Hernandez M. Evidence-based clinical practice guidelines for pachyonychia congenita syndromes. J Eur Acad Dermatol. 2021.

guideline2021
3

Patel VN, Liu K, Brownstein N. Phase II clinical trial of topical sirolimus for hypertrophic nail changes in PC4. Br J Dermatol. 2023.

clinical_trial2023
4

Thompson AH, Rodriguez R, Kim S. Systematic review and meta-analysis of keratoderma treatments in pachyonychia congenita variants. Acta Derm Venereol. 2020.

meta_analysis2020

Medication Comparisons

Compare medications used to treat Pachyonychia Congenita 4 C3714949. See side-by-side comparisons of effectiveness, side effects, costs, and more.

View Medication Comparisons

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy