Toxoplasmosis infection is a condition that typically presents with mild, flu-like symptoms. In individuals with a strong immune system, it is often asymptomatic or results in mild symptoms. The most common symptoms include fever, fatigue, headache, muscle and joint aches, and swollen lymph nodes. These symptoms are usually more pronounced in the lymph nodes of the neck, armpits, and groin. Other less common but possible symptoms include skin rash, eye pain, blurred vision, confusion, enlarged liver and spleen, seizures, and jaundice. In rare cases, especially in individuals with a weakened immune system or in cases of congenital toxoplasmosis, the infection can lead to serious complications. These severe complications may include eye infections (such as retinitis) that can lead to vision loss or even blindness, and brain inflammation (encephalitis). However, it is not certain that such severe conditions will occur in every toxoplasmosis patient.