C. The anxiety and worry are associated with three (or more) of the following six symptoms (with at least some symptoms having been present for more days than not for the past 6 months): Note: Only one item is required in children. 1. Restlessness or feeling keyed up or on edge. 2. Being easily fatigued.
Your doctor may order a serum phosphorus test if they suspect that your phosphorus level is too low or too high. Either extreme can lead to health problems. Symptoms that may indicate your phosphorus level is too low include: changes in your mental state (for example, anxiety, irritability, or confusion) bone issues, such as pain, fragility, and poor development in children
Diagnosis and Treatment. The diagnosis is based on blood tests indicating that the phosphate level is low. Doctors do other tests to identify the cause if it is not readily apparent. Any drugs that can reduce the phosphate level are stopped. If hypophosphatemia is mild and causes no symptoms, drinking low-fat or skim milk, which provides a large amount of phosphate, may help. Or people can take phosphate by mouth, but doing so usually causes diarrhea.