Other Conditions Causing Yellow Toenails. Although fungal infection is the most likely cause of yellow toenails, rarely, some other disease conditions can also result in yellow toenails. Some of these conditions are psoriasis, jaundice, paronychia, lymphedema, bronchiectasis, tuberculosis and sinusitis.
1. a plant or animal that lives upon or within another living organism at whose expense it obtains some advantage; see symbiosis. 2. the smaller, less complete member of asymmetrical conjoined twins, attached to and dependent upon the autosite.parasitÂ´ic. malarial parasite Plasmodium.
an organism that lives in association with, and at the expense of, another organism, the host, from which it obtains organic nutrition. Those that live on the outside of the host, such as ticks, are called ectoparasites, while others such as tapeworms that live inside the host are called endoparasites.