Medicine, Health & Food

Medicine, Health & Food

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Patterns of Apperceptive and Associative Visual Agnosia amongst patients with Neurological disorders in a teaching hospital in Nigeria

Volume: 135  ,  Issue: 1 , October    Published Date: 26 October 2023
Publisher Name: IJRP
Views: 107  ,  Download: 51 , Pages: 80 - 100    
DOI: 10.47119/IJRP10013511020235599


# Author Name
1 Henrietta Olubusayo Osoba


BACKGROUND: Visual agnosia is a significant cause of visual morbidity affecting some patients with neurological disorders. These disorders could range from vascular, degenerative, traumatic amongst others. It is usually visually disabling for the sufferers, who are usually being managed by the neurologist, psychiatrist or a combination of both. Depending on the area of the brain involved, agnosias could vary in presentations. Furthermore, visual agnosia specifically may also vary in type, and may and may not occur in the presence of other neurological signs and symptoms. Knowledge of the presentation patterns of visual agnosia, could help in early recognition and prompt treatment and/or rehabilitation for the individuals affected. AIM: This study aims to find out the presentation patterns for visual agnosia amongst the sufferers in patients with neurological diseases METHOLOGY: A hospital based observational study (case series/report). RESULTS: Results showed diverse neurological presentations for patients with visual agnosia with all the cases having abnormality of the optic nerve 8(100%).  Different areas of the brain were involved. However, the majority, 3 out of the 8 (cases (37.5%) had affectation of the occipital lobe. The other associated neurological signs include hemiparesis, tremors, involuntary muscle movement, cranial nerve abnormalities amongst others. The neurological diseases in this study presenting with visual agnosia include stroke, multiple sclerosis, Parkinsons disease, degenerative dementia, and traumatic brain injury. DATA ANALYSIS: Data was entered and analyzed using IBM SPSS version 25 software. The percentages of the variable was determined. CONCLUSION: Visual agnosia may occur in patients with diverse neurological diseases. It may be more common than previously diagnosed as patients may not complain of it unless asked or elicited yet could severely affect the quality of life of the affected individuals. The presentation patterns may also vary depending on the underlying neurological pathology and type of visual agnosia.  Adequate recognition and management of visual agnosia is key in ensuring the best prognosis for those affected.  


  • Apperceptive visual agnosia
  • Associative visual agnosia