Evidence map›Paper›PMID 41732620›Full record

ArticleCureus2026

Marchiafava-Bignami Disease and Pellagra in a Chronic Alcohol User: A Reversible Case of Cognitive Impairment.

Diogo Ramos, André Valente, Rodrigo Leão, Ana M Serrano

Abstract readCase Reports
In one paragraph

Article in Cureus, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Diogo RamosInternal Medicine, Unidade Local de Saúde de São José, Lisbon, PRT.
André ValenteInternal Medicine, Unidade Local de Saúde de São José, Lisbon, PRT.
Rodrigo LeãoInternal Medicine, NOVA Medical School, Lisbon, PRT.
Ana M SerranoInternal Medicine, Unidade Local de Saúde de São José, Lisbon, PRT.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Marchiafava-Bignami disease (MBD) is a rare complication of chronic alcoholism characterized by demyelination of the corpus callosum. Pellagra, resulting from niacin (vitamin B3) deficiency, typically presents with dermatitis, diarrhea, and dementia. Both MBD and pellagra are often associated with severe nutritional deficiencies. We describe the case of a 56-year-old man with alcohol use disorder admitted after a syncopal episode, presenting with disorientation, apathy, and photosensitive desquamative lesions on sun-exposed skin. Brain MRI revealed T2 hyperintensity in the splenium and body of the corpus callosum, compatible with subacute MBS. Laboratory tests confirmed niacin deficiency, establishing concomitant pellagra. The patient received B-complex vitamin supplementation and was maintained in alcohol abstinence. His cognitive and dermatologic condition improved markedly, with near-complete recovery after six months. This case underlines the importance of recognizing nutritional deficiencies in alcohol-related neuropsychiatric presentations.

Indexed as

acute reversible encephalopathychronic alcohol abusemarchiafava-bignami disease (mbd)niacin deficiencypellagra

Identifiers

PMID41732620
PMCPMC12925483

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.