2.3 MILD COGNITIVE DISORDER

Mild cognitive disorder was introduced as a new entity in ICD – 10 (World Health Organization, 1992). ICD-10 describes the condition as one characterized by decline in cognitive performance, including memory impairment and learning or concentration difficulties. The disorder may precede, accompany, or follow a wide variety of infections and physical disorders. When associated with a physical disorder from which the patient recovers, mild cognitive disorder does not last for more than a few additional weeks. ICD – 10 mentions that the boundaries of this category are still to be established. A similar DSM-IV construct (mild neurocognitive disorder) is included in an appendix as an example of cognitive disorder not otherwise specified. Mild cognitive disorder has been reported in meningitis due to neurosarcoidosis (Pruter et al., 2001). However, the interface between amnestic disorders or dementing disorders and mild neurocognitive disorder has not been defined reliably or validly (Christensen et al., 1995).