Lyssa comes from Greek mythology, where Lyssa is the spirit of frenzy, rage, or mad passion.
Lyssa descends from one of the most dramatically charged figures in Greek mythology: Lyssa (Λύσσα), the goddess or personified spirit of mad rage, frenzy, and the rabies of animals. She was the daughter of Nyx (Night) and the blood of Uranus, making her kin to the Erinyes, the avenging Furies. In Euripides' *Heracles*, it is Lyssa herself — reluctant, reasoning, almost sympathetic — who drives the hero to the madness that causes him to murder his own family.
She is one of Greek mythology's most psychologically complex minor figures: an embodiment of destructive force who nevertheless understands the tragedy she must enact. In modern usage, however, Lyssa has almost entirely shed this mythological weight, functioning primarily as a sleek, contemporary variant of Alyssa or Melissa. Alyssa traces to Alicia (from Alice, ultimately from Germanic Adalheidis, meaning "noble kind"), while Melissa derives from the Greek word for honeybee — *mélissa* — making Lyssa a shortening that could claim either lineage.
The name gained popularity in the 1980s and 1990s as parents sought streamlined versions of longer names. Today Lyssa sits attractively between the ancient and the modern: brief enough to feel current, sonorous enough to feel considered. For parents who know the mythological background, there's a delicious irony in giving such a charged name to a newborn. For most, it simply sounds lovely — and sometimes that is the most honest reason of all.