<unk>  progressively evolves into dementia.<unk>  dementia, a degenerative disorder, causes a progressive loss of<unk>  and conceptual knowledge. The region of the brain associated with<unk>  dementia is the left anterior temporal lobe Patients experience difficulties in verbal identification of stimuli and have poor word knowledge and association abilities. Other symptoms associate with<unk>  dementia include anomia (a form of aphasia), category fluency, comprehension, and language problems. However, visuospatial, attentional, and executive functions remain normal. Retention of numerical knowledge and music is unaffected. Anomia is the inability to name objects, and is a common early symptom of<unk>  dementia. As a result, it becomes difficult to correctly name objects. For example, a pen may be referred to as a pencil, a car as a truck, or a glass may be considered to be a cup. In later stages, the ability to categorize information deteriorates and no distinction remains between objects of different nature, such as hot versus cold, plant versus animal, etc. In fact, the perception towards objects also changes, such that everyday objects may appear strange or frightening. Studies have shown that as<unk>  impairment deteriorates, autobiographical impairment also becomes worse. The patient is unable to remember events that occurred throughout their life, such as achievements, milestones, major setbacks and successes, to name a few. This finding suggests that episodic memory may also be affected. Reasoning abilities remain relatively unaffected.
Semantic amnesia
Source amnesia
Psychogenic amnesia
Post-traumatic amnesia
Autophobia
Anterograde amnesia
Memory distrust syndrome
Tactile hallucination