Gerstmann syndrome includes acalculia, finger agnosia, L/R confusion, and which additional deficit?

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This item is about the specific syndrome tied to left parietal damage, especially the angular gyrus, which produces a distinctive four-part deficit pattern. The additional deficit that completes the classic set is agraphia, a writing impairment. Damage in this region disrupts the integration of language, numerical processing, and motor plans for writing, so acalculia, finger agnosia, and L/R confusion appear together with difficulties in writing.

Spatial neglect is typically seen with right parietal damage and would not form the left-dominant Gerstmann tetrad. Prosopagnosia involves facial recognition and the ventral visual stream, not the parietal processes at play here. Anomia is a general word-finding problem associated with broader left-hemisphere language areas and does not specifically complete the Gerstmann cluster.