Our youngest daughter screamed something terrible for months and months when she was a baby. There was a period of maybe two months where I thought I had permanent hearing loss from it.

Went to the doctor and turned out that I had a cold as some point and the pressure in my ear never equalized back correctly, which meant the ear drum couldn't vibrate right. A couple weeks of allergy medicine seemed to fix the issue.

Around that time though, I bought a pair of ear muffs and wore them every time I had to put her to bed or change her diaper. Amazing. Highly recommended.