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.
1 Commensalism: One organism benefits and the other is neither harmed nor helped. 2  Mutualism: Both organisms benefit. 3  An obligate mutualist cannot survive without its partner; a facultative mutualist can survive on its own. 4  Parasitism: One organism (the parasite) benefits and the other (the host) is harmed. Mutualism: Both organisms benefit. 2  An obligate mutualist cannot survive without its partner; a facultative mutualist can survive on its own. 3  Parasitism: One organism (the parasite) benefits and the other (the host) is harmed.