[Leading neurological symptoms of internal diseases]

After description of the central-nervous signs due to hypoglycemia, hypoxia, hypo- and hypercalcemia there are discussed several internal diseases with prominent neurologic symptoms like endocrine disorders of thyroid, adrenal and pituitary gland, malignant diseases especially regarding the hematopoietic system, disorders of the joints and connective tissue and metabolic disorders as acute intermittent porphyria, uremic and hepatic coma. The principal differential diagnostic considerations in this relation are being described in order to avoid severe diagnostic errors.