Xanthoma planum
Xanthoma planum (ILDS D76.370), also known as plane xanthoma, is clinically characterized by bands or rectangular plates (macules) and plaques in the dermis spread diffusely over large areas of the body. : 531

Palmar xanthoma
Palmar xanthoma is clinically characterized by yellowish plaques that involve the palms and flexural surfaces of the fingers. : 531  Plane xanthomas are characterised by yellowish to orange, flat macules or slightly elevated plaques, often with a central white area which may be localised or generalised. They often arise in the skin folds, especially the palmar creases. They occur in hyperlipoproteinaemia type III and type IIA, and in association with biliary cirrhosis. The presence of palmar xanthomata, like the presence of tendinous xanthomata, is indicative of hypercholesterolaemia. Tuberoeruptive xanthoma
Tuberoeruptive xanthoma (ILDS E78.210) is clinically characterized by red papules and nodules that appear inflamed and tend to coalesce. : 532  Tuberous xanthomata are considered similar, and within the same disease spectrum as eruptive xanthomata. Other types
Other types of xanthoma identified in the Medical Dictionary include:
Xanthoma diabeticorum: a type of eruptive xanthoma, often with severe diabetes. Xanthoma disseminatum: a rare xanthoma consisting of non-X histiocytes on flexural (folded) surfaces, associated with diabetes insipidus. Verrucous xanthoma, or histiocytosis Y: a papilloma of the oral mucosa and skin whereby the connective tissue under the epithelium contains histiocytes. See also
Xanthelasma
List of xanthoma variants associated with hyperlipoproteinemia subtypes

References
External links

 Media related to xanthoma at Wikimedia Commons
MedlinePlus Encyclopedia: Xanthoma
For example, an individual who has been diagnosed with associative agnosia in the visual modality would not be able to match pictures of a laptop that is open with a laptop that is closed. Pure alexia
Individuals with pure alexia usually have difficulty reading words as well as difficulty with identifying letters. In order to assess whether an individual has pure alexia, tests of copying and recognition must be performed. An individual with pure alexia should be able to copy a set of words, and should be able to recognize letters. Prosopagnosia
Individuals are usually shown pictures of human faces that may be familiar to them such as famous actors, singers, politicians or family members. The pictures shown to the patient are selected to be age and culture appropriate. The task involves the examiner asking the individual to name each face. If the individual cannot name whose face appears in the picture, the examiner may ask a question that would help to recognize the face in the picture. Treatment
For all practical purposes, there is no direct cure. Patients may improve if information is presented in other modalities than the damaged one. Different types of therapies can help to reverse the effects of agnosia. In some cases, occupational therapy or speech therapy can improve agnosia, depending on its cause.Initially many individuals with a form of agnosia are unaware of the extent to which they have either a perceptual or recognition deficit. This may be caused by anosognosia which is the lack of awareness of a deficit.