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
1 To see if your symptoms may be caused by a very low calcium level in the blood. 2  Such symptoms may include muscle cramps, spasms, and twitching and tingling in the fingers and around the mouth. 3  To see if your symptoms may be caused by a very high calcium level in the blood.hey also control the amount of calcium you absorb from food and the amount passed from the body in urine. The blood levels of phosphate are closely linked to calcium levels and they work in opposite ways: As blood calcium levels get high, phosphate levels get low, and the opposite is also true.