“…This kind of abnormality is related with many etiologies that can be classified as inflammatory (CMV infection, neurocysticercosis, toxoplasmosis, neurobrucellosis, tuberculosis, HIV infection), tumoral (astrocytomas), hypoxic and vascular (arteriovenous malformations calcified infarct, ischemic encephalophaty), endocrine (hypoparathyroidsm, pseuso and pseudohypoparathyroidism, hyperparathyroidism), toxic (CO and Pb intoxication, hypervitaminosis D, radiotherapy), metabolic and degenerative (senility, mithocondrial encephalopaties, leukodistrophic diseases, idiopathic familial, motor neuron disease, myotonic muscular dystrophy, carbonic anidrase deficit, biopterin deficit) and other (malabsorption, Down syndrome, lupus, tuberous sclerosis, arthrogriposis) [8][9][10][11][12][13] .…”