Peeling skin syndrome 2

What it is, symptoms and effects

From: MedlinePlus Genetics, National Library of Medicine

Peeling skin syndrome 2 is a skin disorder characterized by painless peeling of the top layer of skin. In this form of peeling skin syndrome, the peeling is most apparent on the hands and feet. Occasionally, peeling also occurs on the arms and legs. The peeling usually starts soon after birth, although the condition can also begin in childhood or later in life.

Skin peeling is made worse by exposure to heat, humidity and other forms of moisture, and friction. The underlying skin may be temporarily red and itchy, but it typically heals without scarring. Peeling skin syndrome 2 is not associated with any other health problems.

Causes and biological mechanisms

From: MedlinePlus Genetics, National Library of Medicine

Peeling skin syndrome 2 is caused by variants (also called mutations) in the TGM5 gene. This gene provides instructions for making an enzyme called transglutaminase 5, which is part of the outer layer of skin (the epidermis). Transglutaminase 5 plays a critical role in the formation of a structure called the cornified cell envelope, which surrounds epidermal cells and helps the skin form a protective barrier between the body and its environment.

TGM5 gene variants reduce the activity of transglutaminase 5 or prevent cells from making any of this enzyme. A shortage of transglutaminase 5 weakens the cornified cell envelope, which allows the outermost cells of the epidermis to separate easily from the underlying skin and peel off. The peeling may be most noticeable on the hands and feet because those areas are more often exposed to moisture and friction.

Inheritance and family implications

From: MedlinePlus Genetics, National Library of Medicine

Peeling skin syndrome 2 is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell must have a variant to cause the disorder. The parents of an individual with an autosomal recessive condition each carry one copy of the altered gene, but they typically do not show signs and symptoms of the condition.

How common is it?

From: MedlinePlus Genetics, National Library of Medicine

Peeling skin syndrome 2 is a rare condition, with a few dozen cases reported in the medical literature. However, because its signs and symptoms tend to be mild and similar to those of other skin disorders, the condition is likely underdiagnosed.

Reported clinical features and what the terms mean

The following findings are associated with this condition in Orphanet. They are not a checklist for diagnosing yourself, and they do not all occur in every affected person. Some are examination, imaging or laboratory findings that cannot be recognised at home.

The frequency labels describe how often a finding was reported among people with the condition in the source. They do not give the chance that a person with that symptom has the condition. Definitions below reproduce HPO terminology; they explain the term, not the likely severity in an individual.

Abnormal blistering of the skin · Frequent (79-30%)

The presence of one or more bullae on the skin, defined as fluid-filled blisters more than 5 mm in diameter with thin walls.

Allergy · Frequent (79-30%)

An allergy is an immune response or reaction to substances that are usually not harmful.

Eczematoid dermatitis · Frequent (79-30%)

Eczema is a form of dermatitis that is characterized by scaly, pruritic, erythematous lesions located on flexural surfaces.

Erythema · Frequent (79-30%)

Redness of the skin, caused by hyperemia of the capillaries in the lower layers of the skin.

High hypermetropia · Frequent (79-30%)

A severe form of hypermetropia with over +5.00 diopters.

Ichthyosis · Frequent (79-30%)

An abnormality of the skin characterized the presence of excessive amounts of dry surface scales on the skin resulting from an abnormality of keratinization.

Scaling skin · Frequent (79-30%)

Refers to the loss of the outer layer of the epidermis in large, scale-like flakes.

Hyperpigmentation of the skin · Occasional (29-5%)

A darkening of the skin related to an increase in melanin production and deposition.

Macule · Occasional (29-5%)

A flat, distinct, discolored area of skin less than 1 cm wide that does not involve any change in the thickness or texture of the skin.

Papule · Occasional (29-5%)

A circumscribed, solid elevation of skin with no visible fluid, varying in size from a pinhead to less than 10mm in diameter at the widest point.

Skin erosion · Occasional (29-5%)

A discontinuity of the skin exhibiting incomplete loss of the epidermis, a lesion that is moist, circumscribed, and usually depressed.

Excessive wrinkling of palmar skin · Occasional (29-5%)

Which doctor should you see?

The suggested department for discussing Peeling skin syndrome 2 is Dermatology, with a dermatologist as the relevant type of clinician. Dermatologist; paediatric services for children as appropriate.

Additional services that may be relevant, depending on the findings, include: Clinical Genetics.

This is an editorial referral starting point. The appropriate clinic depends on the person’s age, symptoms, previous diagnosis and local services. The first clinician can decide whether another specialty or a team is needed; a department label does not confirm the diagnosis.

How to prepare for an assessment

Bring a short timeline of the main symptoms: when they first appeared, whether they are constant or episodic, what seems to change them, and how they affect daily activities. Include previous reports, discharge summaries, current medicines and supplements, allergies, and any relevant family history. A dated record is more useful than trying to match every feature in an online article.

Ask the clinician what is already established and what remains uncertain. If a test is suggested, ask what question it answers, what its limitations are and how the result would change the next step. The information here is not an instruction to arrange every possible test. In children, bring growth, developmental and school information if it is relevant to the concern.

• Which features of the skin, hair or nails distinguish the possibilities?
• Would photographs over time help document the changes?
• What should be expected from treatment, and how will irritation or other adverse effects be managed?

Treatment discussions and follow-up

The material gathered for this draft does not provide a complete condition-specific treatment pathway for Peeling skin syndrome 2. That gap does not mean that treatment is unavailable. A clinician needs to establish the diagnosis and review current guidance before recommending medicines, procedures, rehabilitation or other support.

Before leaving the appointment, clarify the next review date, who will communicate results, and whom to contact if the situation changes. Discuss difficulties with sleep, work, school, mobility, eating or emotional wellbeing when these are relevant. Practical support may require coordination between the treating clinician and other services.

The collected references do not establish a complete prevention or long-term outlook section for this entry. Missing information should not be interpreted as proof that prevention is impossible or that a particular outcome is inevitable. Ask what is known for the exact subtype, stage and personal circumstances, and which uncertainties remain.

When to seek emergency help

Severe breathing difficulty, collapse, new stroke-like symptoms, a seizure that is prolonged or repeated without recovery, uncontrolled major bleeding, or an immediate risk of self-harm require emergency help. In India, call 112 or reach the nearest emergency department. This is a general, non-exhaustive warning list; it is not a condition-specific triage tool.