tightness, fullness, pressure, tenderness, or pain Other symptoms occur less often and it may not be obvious they’re related to hyperventilation.
[healthline.com]
According to Gardner et al, chest tightness is not a symptom of hyperventilation per se [ 12 ].
[journals.plos.org]
Presenting complaints were dyspnea (61%), paresthesia (35%), chest pain or tightness (43%), muscle spasm (9%), dizziness (13%), palpitations (13%), and panic (30%).
[ncbi.nlm.nih.gov]