pedialgia
/ˌpɛdɪˈældʒɪə/ (PED-ee-AL-jee-uh)
Definitions
1. noun
A condition in which a baby’s legs draw up and lock when they are frightened or upset, such as when they are about to cry.
“After a few minutes of intense crying, she exhibited signs of pedialgia, pulling her legs up tightly.”