“The Neurotoxic Effects of Pyrethroids” is one section of the post by Maryam Henein “When We Fumigate Flies and Mosquitoes, Are We Poisoning Ourselves?” at Truthout, 11 October 2015, beginning:

Upon my return to the United States, my autoimmune condition flared up, and when I visited the doctor, my test results indicated that my thyroid levels had plummeted below normal. I often tell people that those who suffer from autoimmune conditions are environmental indicators just like our honeybees.

Read the full post at Truthout. It ends with consideration (including links) of the effects of pyrethroids on humans and the environment.