Anomia can be genetic or caused by damage to various parts of the parietal lobe or the temporal lobe of the brain due to traumatic injury, stroke, or a brain tumor. While anomic aphasia is primarily caused by structural lesions, they may also originate in Alzheimers disease (anomia may be the earliest language deficit in posterior cortical atrophy variant of Alzheimers) or other neurodegenerative diseases.Although the main causes are not specifically known, many researchers have found factors contributing to anomic aphasia. People with damage to the left hemisphere of the brain are more likely to have anomic aphasia. Brocas area, the speech production center in the brain, was linked to being the source for speech execution problems, with the use of functional magnetic resonance imaging (fMRI), now commonly used to study anomic patients. Other experts believe that damage to Wernickes area, which is the speech comprehension area of the brain, is connected to anomia because the patients cannot comprehend the words that they are hearing.Although many experts have believed that damage to Brocas area or Wernickes area are the main causes of anomia, current studies have shown that damage in the left parietal lobe is the cause of anomic aphasia. One study was conducted using a word repetition test as well as fMRI in order to see the highest level of activity as well as where the lesions are in the brain tissue. Fridrikkson, et al. saw that damage to neither Brocas area nor Wernickes area were the sole sources of anomia in the subjects.
Pigmented purpuric dermatosis refers to one of the three major classes of skin conditions characterized by purpuric skin eruptions. Pigmented purpuric dermatosis are distinguished from other purpura by size (0.3–1 cm) and are most often seen in the lower extremities. : 829   Pigmentary purpuric eruptions may present with one of several clinical patterns. There may be overlapping characteristics among pigmented purpuric dermatosis and between their signs and those of other purpuric eruptions. : 829   Examples of the pigmented purpuric dermatosis group include:: 829–30 
Schambergs disease
Majocchis disease (Purpura annularis telangiectodes)
Gougerot-Blum syndrome (Pigmented purpuric lichenoid dermatitis)
Ducas and Kapetanakis pigmented purpura
Lichen aureusAlthough vascular damage may be present, it is insufficient for these conditions to be considered forms of vasculitis.A few very small non-blinded studies of treatment with narrow-band ultraviolet light have been reported as promising. See also
Purpura
Skin lesion
List of cutaneous conditions

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