What it is
An abnormal change in the colour of skin, nails, or mucous membranes that may indicate local conditions, nutritional deficiencies, vascular changes, or systemic illness.
Emerging evidence
Discoloration
An abnormal change in the colour of skin, nails, or mucous membranes that may indicate local conditions, nutritional deficiencies, vascular changes, or systemic illness.
CategorySkin
Reviewed by Internal Medical Editorial Team · Editorial Health Review
26 March 2026
At a glance
Discoloration at a glance
Commonly experienced as
- New or changing discolouration is often noticed with concern — people are alert to changes in their own skin. The cosmetic impact of visible discolouration is frequently significant, affecting confidence and requiring ongoing management. The uncertainty about significance until assessed adds to the anxiety.
Evidence context
