[Drug-related increase of intelligence level. Considerations and a double-blind-study with flunarizin (sibelium) (author's transl)].

Fluid and crystallized intelligence are two second-order factors that are differentiated within the intelligence model by R.B.Cattell.

[Chronic secondary hypoparathyroidism and pseudo-brain tumour (author's transl)].

A 31-year-old man developed chronic secondary hypoparathyroidism after removal of goitre. Asymmetric cerebral oedema occured and a classical picture of pseudo-brain tumour with severe cerebral involvement developed which regressed merely on administration of calcium ions. The patient has remained well for over a year on dihydrotachysterol maintenance.