This came from another list...
PT

"Exzema  can be controlled with castor oil which is by itself is sometimes too 
irritating to the skin so it is recommended to be blended with another good 
vegetable oil such as olive, sunflower in a 20/80 blend and put on the  scalp 
or skin and allowed to soak well. As far as ticks are concerned a tip from the 
internet is to use a cotton ball and vegetable oil (castor oil) and completely 
cover the ticks
body heavily with the oil. This stops the tick from being able to breathe and 
they will back out of the skin grab them with the cotton ball and dispose then 
clean the site with alcohol."