Summary

• Descriptive term given to skin that features thick, fish-like scales.
• May be inherited or acquired.
• Inherited forms are characterised by a wide range of severity, ranging from isolated skin involvement to multi-organ disease.
• The acquired forms of ichthyosis can be caused by multiple underlying conditions.
• The work-up, diagnosis, and treatment vary greatly depending on the type of ichthyosis that is suspected by the treating physician.