“What does lice look like on a hair strand?” asks this reader in her submission. She does not attach a picture or more context, but we will do our best to help her nonetheless.

“What is this larva I found on my daughter’s windowsill?” asks this reader from Chicago about the transparent, long creature pictured below. “If it helps there’s also some kind of nest outside the window (at the top left) and pigeons sit out there often.”

“I was told I have head lice” says this reader, who sends in multifarious images of organisms, her hair and what appear to be wounds on her skin. Our reader asks us for help, and states that she has “no insurance.”