Hypercalcemia

High vitamin D can cause high calcium, leading to nausea and weakness.

Hypercalcemia is a condition characterized by an abnormally high level of calcium in the blood. This elevated calcium can lead to a range of symptoms affecting various organ systems. Mild hypercalcemia may be asymptomatic. More severe cases can manifest with symptoms such as excessive thirst, frequent urination, abdominal pain, nausea, vomiting, constipation, bone pain, muscle weakness, confusion, lethargy, fatigue, depression, and even cardiac arrhythmias. Prolonged and severe hypercalcemia can lead to kidney damage, kidney stones, osteoporosis, and neurological complications.