Parasitic diseases are caused by organisms known as parasites, which live on or inside a host organism and derive nourishment from it. These diseases can be caused by various types of parasites, including protozoa, helminths (worms), and ectoparasites. Parasitic infections can range from relatively harmless to severe and life-threatening, and they can affect individuals worldwide.
The causes of parasitic diseases can vary depending on the specific parasite involved. Some common causes include:
Parasites can be transmitted through the consumption of contaminated food or water, particularly in areas with poor sanitation practices.
Certain parasites can be transmitted to humans through direct contact with infected animals or their feces.
Some parasites are transmitted to humans through the bites of infected insects or arthropods, such as mosquitoes or ticks.
Certain parasites can be acquired through contact with contaminated soil or environmental surfaces.
The symptoms of parasitic diseases can vary depending on the type of parasite and the specific infection. Some common symptoms include:
These can include diarrhea, abdominal pain, nausea, vomiting, and loss of appetite.
Parasitic infections can cause fatigue, weakness, and general malaise.
Some parasitic infections can lead to skin rashes, itching, or sores.
In some cases, parasitic infections can cause fever.
Certain parasitic infections can affect the respiratory system and cause symptoms such as coughing or difficulty breathing.
In rare cases, parasitic infections can affect the nervous system and lead to neurological symptoms such as seizures or confusion.
Diagnosing parasitic diseases involves a combination of medical history, physical examination, and laboratory tests. Some common diagnostic methods include:
Note: Rate under the appropriate body system any residual disability of infection.
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