Inovinate on Instagram: "Shell shock, first recognized during World War I, described the psychological trauma soldiers experienced after prolonged exposure to heavy artillery and trench warfare. Its effects were both physical and mental: sufferers experienced tremors, paralysis, stammering, nightmares, and severe anxiety. Many could no longer function in combat or everyday life. At the time, medical understanding was limited, and victims were often misdiagnosed as cowards or malingerers, facing