Some of the most common signs of a parasite infection involve gastrointestinal disturbances such as nausea, vomiting, and diarrhea, although other symptoms are also possible. Parasites can cause skin reactions such as itching, rashes, and open sores. Sleep disturbances, autoimmune dysfunction, and fatigue may also occur as a result of a parasite infection. Anemia, fever, and jaundice have been reported among some people who have been diagnosed with internal parasites. Any potential signs of a parasite infection should be reported to a doctor in order to obtain an accurate diagnosis and an individualized treatment plan.
 
The majority of parasite infections primarily affect the intestines, causing symptoms such as abdominal cramping, vomiting, or diarrhea. Nausea, changes in appetite, and increased intestinal gas may also occur. Abnormal masses that resemble tumors may sometimes develop as a result of a parasite infection, often causing abdominal pain and constipation, especially if the mass causes an intestinal blockage.
 
A parasite infection may lead to skin changes such as a rash, itching, and weeping or oozing sores. In many cases, these symptoms are initially confused with other skin disorders such as eczema or psoriasis. Redness, swelling, or blistering skin should be reported to a doctor for further evaluation. A dermatologist is a doctor who specializes in the diagnosis and treatment of skin disorders and should be able to differentiate between symptoms caused by parasites as opposed to other skin conditions.
 
Sleep disturbances may indicate the presence of a parasite infection, often due to itching or discomfort around the anus. Some parasites live just inside the intestinal tract and tend to crawl to the opening of the anus to lay eggs. Children are particularly prone to becoming infected with this type of parasite.
 
The immune system may become compromised if a parasite infection enters the bloodstream. A person with this type of infection may become fatigued easily or experience recurrent bacterial or viral infections. Anemia is a medical term used to describe a condition where there is not enough iron in the blood. This is among the possible circulatory system complications caused by the presence of parasites in the bloodstream.
 
Fever and jaundice may occur as a result of a parasite infection. Jaundice causes the skin and eyes to develop a yellow tint and may indicate liver damage. Muscle or joint pain may also develop as parasites invade these tissues. Without proper medical treatment, severe parasitic infections can prove to be fatal. For this reason, it is important to report any unusual or bothersome symptoms to a doctor so that treatment can begin as early as possible.