Polycystic kidney disease can cause abdominal pain, headaches, and pain in the sides and back. Porphyria is a condition that can affect the nerves and skin, making the skin extremely sensitive to sunlight. Hydronephrosis is a condition of the kidneys and causes aching or pain, urinary symptoms, fever, and nausea.
Protozoan infections are parasitic diseases caused by organisms formerly classified in the Kingdom Protozoa. They include organisms classified in Amoebozoa, Excavata, and Chromalveolata. Examples include Entamoeba histolytica, Plasmodium (some of which cause malaria), and Giardia lamblia. Trypanosoma brucei, transmitted by the tsetse fly and the cause of African sleeping sickness, is another example.
Protozoan Diseases in Humans. Some of the important protozoan diseases are: 1  Malaria: it is mosquito-borne tropical disease caused by the plasmodium species of protozoa. 2  The various types of species are P. vivax, P. falciparum, P. ovale, P.malariae.rotozoa are single cell, living microorganism. They have structures like flagella and cilia which help them in their movements. Almost all the humans, some time in their life time must have got infected with protozoa. Some of the disease caused by protozoa can be mild to life threatening.