The Center for Development of Security Excellence (CDSE) is located in Linthicum, Md., and provides security education and training to DoD security professionals through formal classroom and distributed learning methodologies (i.e., computer-based, web-based and tele-training).
- Types of dizziness include vertigo, dysequilibrium, labyrinthitis, eniere's disease, light-headedness.
Dizziness and Vertigo. Dizziness is a general term that includes four syndromes: A) vertigoâthe illusion of motion, B) pre-syncopeâthe feeling that one is about to faint, C) disequilibriumâthe feeling of unsteady gait, and D) light-headednessâthe feeling of a vague imbalance inside oneâs head.izziness and Vertigo. Dizziness is a general term that includes four syndromes: A) vertigoâthe illusion of motion, B) pre-syncopeâthe feeling that one is about to faint, C) disequilibriumâthe feeling of unsteady gait, and D) light-headednessâthe feeling of a vague imbalance inside oneâs head.