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Progressive non-fluent aphasia
Disease definition
Progressive non-fluent aphasia (PNFA) is a form of frontotemporal dementia (FTD; see this term), characterized by agrammatism, laborious speech, alexia, and agraphia, frequently accompanied by apraxia of speech (AOS). Language comprehension is relatively preserved.
ORPHA:100070
Classification level: Disorder- Synonym(s):
- Agramatic variant of PPA
- Agramatic variant of primary progressive aphasia
- Non-fluent variant PPA
- Prevalence: 1-9 / 100 000
- Inheritance: Multigenic/multifactorial or Not applicable
- Age of onset: Adult
- ICD-10: G31.0
- ICD-11: 6D83
- OMIM: 172700 600274 607485
- UMLS: C0751706
- MeSH: D057178
- GARD: 10793
- MedDRA: 10029542
A summary on this disease is available in Español (2014) Français (2014) Nederlands (2014)
Detailed information
General public
- Article for general public
- Français (2007, pdf) - Orphanet
Guidelines
- Clinical practice guidelines
- Français (2021) - PNDS
Disease review articles
- Clinical genetics review
- English (2020) - GeneReviews


Additional information
Further information on this disease
Patient-centred resources for this disease
Research activities on this disease
The documents contained in this web site are presented for information purposes only. The material is in no way intended to replace professional medical care by a qualified specialist and should not be used as a basis for diagnosis or treatment.