# hyperpigmentation

> darkening of an area of skin or nails caused by increased melanin

**Wikidata**: [Q1641068](https://www.wikidata.org/wiki/Q1641068)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Hyperpigmentation)  
**Source**: https://4ort.xyz/entity/hyperpigmentation


## References

1. Symptom Ontology
2. Human Phenotype Ontology release 2018-03-08
3. Freebase Data Dumps. 2013
4. [Source](https://cdn.who.int/media/docs/default-source/classification/icd/icd-10/icd-10-to-meddra-map---june-2023---codes-mapping.xlsx)
5. GF WordNet
6. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)