[Dementia. Most frequent forms of beginning]. / Demencias. Formas más frecuentes de presentación.

In the present chapter, that is part of a more comprehensive work performed by the Argentine Consortium for Dementia Study - Consortium Argentino para el Estudio de la Demencia (CAED), we describe the most frequent forms of beginning for the four more prevalent types of dementia: Alzheimer's disease, dementia with Lewy bodies, vascular dementia and frontotemporal dementia). Despite this, it must be kept in mind, that frequently the clinical presentation is not typical and the diagnostic impression at the disease's beginning is controversial comparing it with the etiological diagnosis reached when the dementia is definitively installed. This issue must be considered when the initial impression is given to the patient and/or relatives. It must be clarified, in this instance, that this impression is based in statistical data of ways of presentation, but the definitive diagnosis could be different according to the dementia evolution.

Encephalitis and status epilepticus in a patient with systemic lupus erythematosus.

We describe a 42-year old woman with inactive systemic lupus erythematosus (SLE) at the time of her visit. She presented with an atypical movement disorder and partial continuous epilepsy. A brain biopsy excluded cerebral vasculitis and tumoral processes. We discuss the differential diagnosis of status epilepticus in a patient with systemic lupus erythematosus.