Spirit Anxiety feels a lot like sudden onset anxiety or adrenaline and it can lead many mediums to see their gifts as a psychological disorder, and not part of a greater gift. Which it is.
Spirit anxiety is caused by the psychic gift of clairsentience and it is often initiated by the presence of a spirit who is attempting contact with you.
For this reason, your anxiety could be a sign of incoming psychic abilities and/or hidden/latent mediumship gifts coming through, and not a sign of a psychological disorder at all.
When a Spirit is trying to link their energy with yours, as a sensitive, you'll be able to feel that high vibration energy coming in and wanting to connect.
As an entirely energetic being, without the weight and density of a physical body, those in Spirit are naturally higher in vibrational energy than us humans.
Thus, when a Spirit connects with you, your energy must raise up and become higher - more akin to your Spiritual counterparts. Many mediums will to raise their energy on purpose and with intent, but if a Spirit really wants to talk to you, they will gladly raise it up for you, and that - is what feels like the anxiety.
Much like a sensitive piece of laboratory equipment, may be accidentally reading and picking up on an errant signals from the Spirit World, and you may as well tap in and see what they have to say.
Amanda Linette Meder