hyperexcitability

noun
hy·per·ex·cit·abil·i·ty | \ˌhī-pə-rik-ˌsīt-ə-ˈbil-ət-ē \
plural hyperexcitabilities

Medical Definition of hyperexcitability 

: the state or condition of being unusually or excessively excitable a period of hyperexcitability of all or most of the reflexes— S. W. Jacob

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