Ichthyosis: Symptoms, Causes, Treatment
سماك الجلد
Ichthyosis describes a group of conditions causing dry, scaly and variably thickened skin. It may be inherited or acquired, with care determined by type, age and barrier impairment.
What is Ichthyosis?
Not all dry skin is ichthyosis, and severe forms are less common than milder presentations. It is not contagious; early signs may warrant dermatology and genetic assessment.
Related reading: Eczema as another cause of dryness and itching.
Symptoms
Scaling, roughness, itching and painful cracks can occur. Certain types affect sweating, eyelid movement or hearing when scales accumulate near the ears.
Causes
Inherited forms involve genetic changes affecting skin formation and turnover. New scaling in adulthood can be associated with medicines or another illness requiring investigation.
Risk factors
Family history supports an inherited cause, while acquired forms may relate to medicines or systemic illness. Identifying the type guides appropriate follow-up.
Diagnosis
Assessment reviews the skin, age at onset, family history and medicines. Biopsy or genetic tests may help, while newly acquired adult symptoms prompt investigation for underlying causes.
Treatment
Care includes regular moisturization after gentle bathing and selected scale-softening products. Retinoids or stronger treatments require specialist selection and monitoring, particularly when pregnancy is possible.
Complications
Severe forms may cause infection, dehydration, temperature-control difficulties, restricted movement or emotional distress. These problems do not affect everyone with ichthyosis.
Prevention
Avoid scratching, harsh exfoliation and overheating, and follow a daily skin-care plan. Do not apply peeling acids over large areas or to infants without medical guidance.
When to see a doctor
Seek care for infected cracks, fever or poor heat tolerance. A newborn with tight skin or severe peeling needs urgent specialist assessment.