Cutis Laxa

Overview

Cutis laxa is a rare disorder of connective tissue in which the skin becomes loose, wrinkled, and sagging and does not snap back into place when stretched. The underlying problem lies in elastic fibers, the parts of connective tissue that normally give skin and other tissues their stretch and recoil. When these fibers are abnormal, tissues lose their elasticity.

The condition can be present from birth (inherited forms) or develop later in life (acquired forms). Although the most visible effect is on the skin, some forms also affect internal structures that rely on elastic tissue, such as the lungs, blood vessels, and digestive tract. The severity ranges widely, from mainly cosmetic skin changes to more serious involvement of internal organs.

Symptoms

The hallmark of cutis laxa is loose, inelastic skin, but features vary by type:

• Skin that hangs in loose folds, especially on the face, neck, and body
• A prematurely aged or drooping appearance
• Skin that, when pulled, returns to position slowly rather than springing back
• In some inherited forms, involvement of internal organs causing breathing problems, hernias, or blood vessel changes
• Joint looseness in certain types

Unlike Ehlers-Danlos syndrome, where skin is stretchy but recoils, cutis laxa skin is loose and lacks recoil.

Causes

Cutis laxa results from abnormal elastic fibers, which can arise in different ways:

• Inherited forms: Caused by changes in genes that affect the formation of elastic fibers. These can be passed down in dominant, recessive, or X-linked patterns, and some are present from birth.
• Acquired forms: Develop later in life, sometimes after a severe skin reaction, inflammation, certain infections, drug reactions, or in association with other illnesses.

In all forms, the loss of normal elastic tissue is responsible for the loose, sagging skin and any internal organ effects.

Risk Factors

• A family history of cutis laxa (for inherited forms)
• Certain inflammatory skin reactions or severe rashes (for some acquired forms)
• Reactions to certain medications in susceptible people
• Some underlying autoimmune or systemic illnesses

Diagnosis

Diagnosis combines the characteristic skin findings with specialized tests:

• Clinical examination: Recognizing loose, inelastic skin and noting whether other organs are involved.
• Skin biopsy: Examining a small skin sample under the microscope can show abnormal or reduced elastic fibers.
• Genetic testing: Can identify the specific gene change in inherited forms and guide counseling.
• Evaluation for internal involvement: Tests of the heart, blood vessels, lungs, and abdomen when a systemic form is suspected.

Treatment

There is no cure for cutis laxa, so care focuses on managing symptoms and monitoring for complications:

• Monitoring internal organs: When systemic forms are present, regular checks of the heart, blood vessels, and lungs allow early treatment of complications.
• Surgical options: Cosmetic or reconstructive surgery can tighten loose skin, though results may not be permanent because the underlying tissue remains abnormal.
• Treating complications: Repairing hernias and managing lung or vascular problems as needed.
• Addressing causes of acquired forms: Treating an underlying illness or stopping a triggering medication where identified.
• Supportive care: A multidisciplinary team and genetic counseling for inherited forms.

Prevention

• Inherited cutis laxa cannot be prevented, but genetic counseling can inform family planning
• Attend recommended monitoring for heart, lung, and vascular health in systemic forms
• Seek prompt care for severe skin reactions that may precede acquired forms
• Avoid smoking, which is hard on lung and elastic tissue
• Report new respiratory, cardiovascular, or abdominal symptoms early

When to See a Doctor

See a doctor if you or your child develops unusually loose, sagging, inelastic skin, particularly if it appears early in life or worsens. Seek prompt care if there are signs that internal organs may be involved, such as:

• Shortness of breath or breathing difficulty
• A new bulge suggesting a hernia
• Symptoms of a heart or blood vessel problem

People with known systemic cutis laxa should keep up regular specialist monitoring so complications can be caught early.

Related Topics

Frequently Asked Questions

References

1. MedlinePlus Genetics, U.S. National Library of Medicine. Cutis laxa.
2. National Organization for Rare Disorders (NORD).
3. Genetic and Rare Diseases Information Center (GARD).
4. Merck Manual. Connective Tissue Disorders.