A social media user identified as Dr. Nonso on Twitter has recounted how a young child died after mom applied strong insecticide on the child’s hair. 
According to him, a mother had applied sniper on her son’s dreads to kill his hair lice but this led to his death instead. He further explained that some insecticides penetrate through the skin and are highly dangerous.

See his tweet below:
I JUST HEARD THE SHOCKING STORY OF MOTHER WHO PUT SNIPER ON HER CHILD’S DADA AND COVERED IT WITH A NYLON BAG
SHE WANTED TO KILL THE LICE IN HIS HAIR
THE CHILD DIED
SNIPER BELONGS TO A GROUP KNOWN AS ORGANOPHOSPHATES AND CAN ALSO BE ABSORBED THROUGH THE SKIN
BE GUIDED

Source: https://aderonkebamidele.com/woman-accidentally-kills-her-son-after-putting-sniper-in-his-dreadlocks-to-kill-lice/

Self medication is very very bad