Can you lose your voice by screaming into a pillow?

Yes, you can potentially lose your voice by screaming into a pillow. While the pillow may muffle the sound, the strain from yelling can still cause irritation or damage to the vocal cords. Overexertion of the vocal cords can lead to hoarseness or temporary voice loss, regardless of the medium used to amplify your voice. It's always best to avoid excessive shouting to protect your vocal health.