Kisho is an information platform, not a medical provider. Nothing on this site constitutes medical advice, diagnosis, or treatment recommendations. All content is aggregated from publicly available sources (including ClinicalTrials.gov, PubMed, FDA.gov, and Orphanet) and is provided for informational purposes only. Clinical trial eligibility, treatment decisions, and any health-related actions should always be discussed with a qualified healthcare professional. Kisho does not endorse any specific therapy, organization, or clinical trial. Terms of use · Privacy policy
PENS syndrome is a rare, genetic, neurocutaneous syndrome characterized by the presence of randomly distributed, small, white to yellowish, multiple, rounded or irregular polycyclically-shaped, epidermal keratotic papules and plaques of ''gem-like'' appearance with a rough surface, typically located on the trunk and proximal limbs, associated with variable neurological abnormalities, including psychomotor delay, epilepsy, speech and language impairment and attention deficit-hyperactivity disorder. Clumsiness, dyslexia and oftalmological abnormalities have also been reported.
Biomarker and diagnostic research for PENS syndrome has been reported in the published literature.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for PENS syndrome.
6 publications have been identified in PubMed for PENS syndrome. Research spans Clinical Trial Publication (33%), Epidemiology / Natural History (33%), and Diagnostic / Biomarker (17%).
Patel AMR (2025). [PMID: 39717873](https://pubmed.ncbi.nlm.nih.gov/39717873/). *Brain Behav Immun Health*. [Clinical Trial Publication]
Costa MO (2025). [PMID: 41264658](https://pubmed.ncbi.nlm.nih.gov/41264658/). *PLoS One*. [Basic Science / Preclinical]
Bhandari B (2025). [PMID: 41237185](https://pubmed.ncbi.nlm.nih.gov/41237185/). *PLOS Glob Public Health*. [Diagnostic / Biomarker]
Valenzuela-Rios C (2024). [PMID: 38892882](https://pubmed.ncbi.nlm.nih.gov/38892882/). *J Clin Med*. [Clinical Trial Publication]
Bune GT (2024). [PMID: 39172933](https://pubmed.ncbi.nlm.nih.gov/39172933/). *PLoS One*. [Epidemiology / Natural History]
Opara UC (2024). [PMID: 39696677](https://pubmed.ncbi.nlm.nih.gov/39696677/). *Reprod Health*. [Epidemiology / Natural History]
Data assembled from 3 of 12 sources · Last updated Sep 18, 2026, 7:14 PM UTC
European rare disease database
Genetic and Rare Diseases Info Center
Common questions about PENS syndrome