Excessive protein levels in the blood, known as hyperproteinemia, may not cause specific symptoms on their own. However, underlying conditions contributing to high protein levels may exhibit symptoms. For example, if the excess protein is due to multiple myeloma (a type of blood cancer), symptoms may include bone pain, fatigue, recurrent infections, and kidney problems. If hyperproteinemia is related to kidney disease, symptoms can include swelling, fatigue, loss of appetite, and changes in urine output. It is important to consult a healthcare professional for a thorough evaluation and appropriate management.