<s>[INST] How can you tell if there is fluid in the middle ear? [/INST] You can't tell if there is fluid in the middle ear just by looking at the outside of the ear. The middle ear is inside the head, behind the eardrum. You can't see inside the middle ear without using a special instrument.But your child's behavior may give you some clues. If there is fluid in the middle ear and it is infected, the child may cry, act fussy, or tug at the ears. The child may also have other symptoms, such as fever, diarrhea, or a runny nose.Sometimes, fluid is trapped in the ear but isn't infected. Then it's harder to tell that it's there. Even if your child feels fine, watch for signs that the child is not hearing well.  Source: DSHS TEXAS. Link: https://www.dshs.texas.gov/vision-hearing-screening/hearing-screening-program/ear-infections-what-you. Field: Otolaryngology. Disease: Ear Infection </s>