herpes simplex encephalitis: common form of acute encephalitis caused by herpes simplex 1; usually affects the temporal and frontal lobes
encephalitis: inflammation of the brain usually caused by a virus; symptoms include headache and neck pain and drowsiness and nausea and fever (`phrenitis' is no longer in scientific use)
broom: any of various shrubs of the genera Cytisus or Genista or Spartium having long slender branches and racemes of yellow flowers