I actually went through bed bug psychosis I think and still am tramuatized from my experience with it. I did so much fucking research on bed bugs and body lice and other ectoparasites that can seriously cause damage to humans like rat mites, and batbugs (bed bug cousins, can barely tell the difference without a microscope) that I could pass college level courses on them easily. It hurt me in the long run doing that though and I fully believe it caused a lot of my mental health issues regarding being ocnstantly worried and having PTSD about catching them again. And in regards to dipping your head in alcohol for lice. Yes, that's head lice. Head lice are easy to get rid of though with over the counter or prescription hair lice medicine. The issue lies with people not washing their bedding/pillows/everything your hair touched afterwards because they can survive without a host for 2 days to three days. Body lice are relatively easy to get rid of as well but once again the issue lies with you have to wash your clothing (They live in clothing but move to the body to feed on you) and everything your clothing and you came into contact with in water over 140 degrees farenheight. If that's impossible almost any dryer, especially the industrial ones on the highest heat setting for a half hour will kill any and every ectoparasite there is including bed bugs. But body lice are actually more of an issue to get rid of because they will live in furniture and your bed similar to bed bugs. unlike bed bugs though, they need to feed every two to three days as well so it needs to be a piece of furniture that sees a lot of activity. Public lice are the worst ones by far because those can infest your whole fucking body and you need prescription premethin cream to get rid of them.

Fun fact though, did you know the three different lices actually are biologically separate? They evolved on completely different paths, look it up! Just their traits and abilities are so perfect for what they need to survive that science and biology evolved them all to be so incredibly similar.

Not trying to scare anybody but the three most common places to pick up bed bugs are obviously hotels, libraries are #2 on the list, and public transportation is #3 on the list.