Corticobasal degeneration Corticobasal degeneration (CBD) is a rare disease in which parts of the brain become damaged and begin to shrink. The outer layer of the brain (known as the cortex) and deep parts of the brain (called the basal ganglia) are particularly affected. It is not yet known what causes CBD but an overproduction of a protein called tau is thought to play a role. The disease usually affects people between the ages of 60 and
The brain compensates by absorption of CSF across ventricles. Temporal horns dilate asymmetrically, resulting in elevation of the corpus callosum, stretching or perforation of the septum pellucidum, thinning of the cerebral mantle, or enlargement of the third ventricle downward into the pituitary fossa (which may cause pituitary dysfunction). A possible cause of excessive CSF production might a condition known as choroid plexus papilloma, where the increase in CSF production is caused by an abnormal growth in the choroid plexus. b. Obstruction of CSF Pathways
Dementia can affect the following key functions of the brain: - Temporal lobe - Parietal lobe - Frontal lobe - Occipital lobe - Hippocampus - Cerebrum lobe These all affect the function of: -Memory -Emotion -Cognitive skills -Perception -Behaviour -Communication -Senses and movement 1.3 Explain why depression, delirium and age related memory impairment may be mistaken for dementia. Delirium, age related memory and depression often affect the memory and cognitive impairment, which can be mistaken for dementia. If someone is clinically depressed, their symptoms may be very similar to someone who has got dementia. Delirium, like dementia, is more common in older adults. Depression, delirium and age related memory impairment are all symptoms of dementia.
Parietal lobe - responsible for sensory information from the body, also where letters are formed, putting things in order and spatial awareness. Occipital lobe- responsible for processing information related to vision Cerebrum lobe - biggest part of the Brain its role is memory, attention, thought, and our consciousness, senses and movement. Hippocampus = responsible for memory forming, organizing and storing and emotions. 3. Explain why depression, delirium and age related memory impairment may be mistaken for dementia.
3. Iritis The iris is a circular, pigmented membrane that provides the eye its color and the opening in the center is the pupil of the eye. Iritis may be a consequence of trauma (traumatic iritis) or nontraumatic causes. These include blunt trauma to the eye which can cause traumatic inflammation of the iris. Non traumatic iritis is frequently associated with certain diseases, including ankylosing spondylitis, Reiter syndrome, sarcoidosis, inflammatory bowel disease and psoriasis.