Dermatological Manifestations of Down Syndrome

A variety of dermatological disorders are more common in individuals with Down syndrome due to immune dysregulation, genetic factors on chromosome 21, and inefficient physiological processes. Defective regulation of genes on chromosome 21 contributes to conditions like keratosis pilaris, alopecia areata, and vitiligo, while immune issues increase susceptibility to infections.

What is Down Syndrome?

Down syndrome, also known as trisomy 21, is a genetic condition caused by the presence of an extra chromosome 21. It affects multiple systems, including the skin, leading to characteristic dermatological features that vary by age. Transient physiological changes are common in infancy, while chronic conditions emerge later.

Who Gets Dermatological Manifestations of Down Syndrome?

These skin manifestations affect nearly all individuals with Down syndrome, with prevalence increasing with age. Newborns show vascular changes like acrocyanosis, infants develop cutis marmorata, and older children and adults experience dry skin, eczema, and keratoderma. Studies report folliculitis in 30.7%, seborrheic dermatitis in 26.7%, and hidradenitis suppurativa in 22.8% of patients seen by dermatologists.

Related Information

• Down syndrome
• Acrocyanosis
• Cutis marmorata
• Atopic dermatitis
• Keratosis pilaris

Transient Physiological Cutaneous Manifestations

During infancy, newborns with Down syndrome exhibit several transient skin changes due to poor peripheral circulation and altered vascular responses. These resolve as the child grows but are more pronounced than in typical infants.

Acrocyanosis

Acrocyanosis presents as bluish discoloration of the hands and feet, resulting from vasoconstriction in response to cold. It is common in newborns with Down syndrome and typically fades within months.

Cutis Marmorata

This lacy, mottled reticulated pattern on the skin appears when exposed to cooler temperatures, stemming from immature vascular autoregulation. It is frequently observed on the legs and trunk in infants with Down syndrome.

Livedo Reticularis

Similar to cutis marmorata but less intense, livedo reticularis features a net-like purple pattern primarily on the lower limbs, exacerbated by cold. It may persist longer in Down syndrome.

Skin Signs of Premature Ageing

Individuals with Down syndrome often show early signs of ageing, including greying or thinning hair, skin atrophy, wrinkles (rhytids), and lentigines (age spots). Overexpression of superoxide dismutase on chromosome 21 accelerates these changes.

General Skin Changes

Newborn skin in Down syndrome is soft and velvety but becomes rough, dry, and inelastic during school years. Adolescents and adults develop chronic xerosis, patchy lichenification, and reduced elasticity. A study found xerosis cutis in 49% of cases.

Chronic Skin Conditions

Chronic issues arise from immune deficiency, autoimmunity, infections, and keratinization defects. Dry skin predisposes to dermatitis.

Xerosis and Ichthyosis

Dry skin (xerosis) is universal, progressing to ichthyosis vulgaris-like scaling. Emollients are essential for management.

Atopic Eczema

Prevalence is around 5%, matching the general population, with red, scaly, itchy patches on cheeks, ears, knees, and elbows. Malar erythema is prominent.

Irritant and Allergic Contact Dermatitis

Dry skin heightens risk; common triggers include soaps and metals.

Seborrhoeic Dermatitis

Affects up to one-third, with yellow-brown scales on scalp, face, chest, and back, often linked to Malassezia folliculitis. Prevalence is 26.7% in dermatology cohorts.

Palmoplantar Keratoderma

Thickened palms and soles impact up to 40-75% over age 5. Hyperkeratosis on elbows and knees is also common.

Keratosis Pilaris

Rough, follicular papules on arms, thighs, cheeks, and buttocks appear in adolescence. Associated with Down syndrome in 15% of cases; treat with emollients, keratolytics, retinoids, or calcipotriene.

Psoriasis

Incidence 0.5-8%, potentially severe in immunocompromised states. Affects 8.9% overall.

Anetoderma

Flaccid skin patches with herniation, often on trunk and arms, due to elastolysis from folliculitis.

Dermatitis Herpetiformis

Rare, pruritic vesicular rash on extensors, linked to celiac disease. Biopsy shows IgA deposits; screen for celiac.

Hidradenitis Suppurativa

Pustules, nodules, and abscesses in flexures; poor antibiotic response, seen in 22.8%.

Infections and Infestations

Immune dysregulation predisposes to frequent infections.

Bacterial Infections

Folliculitis is most common (30.7%), alongside cellulitis and impetigo.

Fungal Infections

Tinea pedis and onychomycosis are prevalent (9.9%), often with nail dystrophy.

Parasitic Infestations

Scabies and pediculosis occur more frequently due to care challenges.

Autoimmune Conditions

• Alopecia Areata: Patchy hair loss, higher incidence.
• Vitiligo: Depigmented patches from melanocyte autoimmunity.
• Lichen Planus: Rare, pruritic papules.

Connective Tissue Disorders

Elastin defects lead to cutis laxa-like changes and easy bruising.

Malignant and Premalignant Conditions

Rare, but includes basal cell carcinoma and melanoma in situ. Monitor chronic ulcers and actinic damage.

Management and Treatment

• Use fragrance-free emollients daily for xerosis.
• Topical steroids for eczema; antifungals for seborrhea.
• Keratolytics (urea, lactic acid) for keratoderma and keratosis pilaris.
• Antibiotics for infections; refer refractory cases to dermatology.
• Screen for comorbidities like celiac in dermatitis herpetiformis.

Frequently Asked Questions

Is dry skin common in Down syndrome?

Yes, xerosis affects most individuals, worsening with age; daily moisturizing is key.

How is eczema managed in children with Down syndrome?

With emollients, topical corticosteroids, and avoiding irritants; malar involvement is typical.

Why are infections more frequent?

Due to immune dysregulation from trisomy 21.

Does keratosis pilaris resolve?

It may improve with treatment but often persists; use keratolytics.

Are skin cancers more common?

Rare, but vigilance is needed for chronic lesions.

div class=’ct-references’>

References

Author

medha deb

 

Medha Deb is an editor with a master's degree in Applied Linguistics from the University of Hyderabad. She believes that her qualification has helped her develop a deep understanding of language and its application in various contexts.

Read full bio of medha deb