Ataxic
Ataxic cerebral palsy is observed in approximately 5–10% of all cases of cerebral palsy, making it the least frequent form of cerebral palsy. Ataxic cerebral palsy is caused by damage to cerebellar structures. Because of the damage to the cerebellum, which is essential for coordinating muscle movements and balance, patients with ataxic cerebral palsy experience problems in coordination, specifically in their arms, legs, and trunk. Ataxic cerebral palsy is known to decrease muscle tone. The most common manifestation of ataxic cerebral palsy is intention (action) tremor, which is especially apparent when carrying out precise movements, such as tying shoe laces or writing with a pencil. This symptom gets progressively worse as the movement persists, making the hand shake. As the hand gets closer to accomplishing the intended task, the trembling intensifies, which makes it even more difficult to complete. Dyskinetic
Dyskinetic cerebral palsy (sometimes abbreviated DCP) is primarily associated with damage to the basal ganglia and the substantia nigra in the form of lesions that occur during brain development due to bilirubin encephalopathy and hypoxic-ischemic brain injury. DCP is characterized by both hypertonia and hypotonia, due to the affected individuals inability to control muscle tone. Clinical diagnosis of DCP typically occurs within 18 months of birth and is primarily based upon motor function and neuroimaging techniques. Dyskinetic cerebral palsy is an extrapyramidal form of cerebral palsy. Dyskinetic cerebral palsy can be divided into two different groups; choreoathetosis and dystonia.
Parapsoriasis refers to one of a group of skin disorders that are characterized primarily by their resemblance to psoriasis (red, scaly lesions), rather than by their underlying cause. Neoplasms can develop from parapsoriasis. For example, it can develop into cutaneous T-cell lymphoma. The word "parapsoriasis" was formed in 1902. Classification
The parapsoriasis groups, described and debated for nearly a century, has spawned a confusing nomenclature. There are some authors who prefer to limit the term "parapsoriasis" to large- and small-plaque variants only. However, the following classification scheme is now generally accepted:: 450 
Large-plaque parapsoriasis
Small-plaque parapsoriasis
Pityriasis lichenoides
Pityriasis lichenoides chronica
Pityriasis lichenoides et varioliformis acuta
Lymphomatoid papulosis

See also
Poikiloderma vasculare atrophicans
List of cutaneous conditions

References


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