All cases of fluid in the ear are caused by some form of auditory tube dysfunction which prevents your eustachian tube from adequately draining. Common causes for developing fluid in the ear for both adults and children includes: Allergies. Any kind of congestion, from a cold virus, similar infection, or even pregnancy.
Latrodectus hesperus. The female black widow spider is considered the most venomous spider in North America. The venom of the black widow spider is 15 times as toxic as the venom of the prairie rattlesnake. Only the female black widow is dangerous to humans; males and juveniles are harmless. The female black widow will, on occasion, kill and eat the male after mating. More than 35,000 species of spiders occur worldwide. About 3,400 species of spiders in 64 families are found in North America.
Black widow spider bites can cause severe abdominal pain and cramping, while brown recluse spider bites can cause the skin around the bite to die. Both these spiders generally live in undisturbed areas, such as attics or sheds, and don't bite unless threatened.