Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Get emergency help for confusion, collapse, a seizure, severe weakness, repeated vomiting with dehydration, breathing difficulty, or sustained muscle spasms.
After parathyroid surgery, contact your care team promptly if you develop tingling around the mouth, new numbness, muscle cramps, or twitching.
These can be signs of low calcium and may need a blood test and treatment adjustment.
Seek urgent medical care for severe or persistent side or back pain, especially with vomiting, fever, or blood in the urine.
A kidney stone or infection may need prompt assessment.
These symptoms can occur with a serious calcium disturbance or another urgent condition.
Arrange routine medical follow-up if you have known parathyroid hyperplasia and develop increasing thirst, frequent urination, constipation, fatigue, muscle weakness, bone pain, or possible kidney-stone symptoms.
These changes may mean that calcium or PTH needs to be checked.
Every sign above is quoted from the sofidex article on Parathyroid hyperplasia. If you are not sure, err upward — it is always reasonable to be checked.