some panic attack symptoms in medical terms

TACHYCARDIA = fast heartbeat

DYSPNEA = shortness of breath

ANGINA = chest pain

NAUSEA = urge to vomit

PRESYNCOPE = lightheadedness, fainting feeling

DEREALIZATION = feeling disconnected to body & thoughts

pseudohallucination

"A pseudohallucination is an involuntary sensory experience that is vivid enough to be regarded as a hallucination, but which is recognized by the person experiencing it as being subjective and unreal. By contrast, a “true” hallucination is perceived as entirely real by the person experiencing it " (Pseudohallucination - Wikipedia)

"The term is not widely used in the psychiatric and medical fields, as it is considered ambiguous;^[5] the term nonpsychotic hallucination is preferred.^[6] Pseudohallucinations are more likely to happen with a hallucinogenic drug. But "the current understanding of pseudohallucinations is mostly based on the work of Karl Jaspers".^[7]

"A further distinction is made between pseudohallucinations and parahallucinations, the latter being a result of damage to the peripheral nervous system.^[8]

"They are considered a possible symptom of conversion disorder in DSM-IV (2000).^[9] In DSM-5 (2013), this definition has been removed.^[2] Also, pseudohallucinations can occur in people with visual/hearing loss, referred to as Charles Bonnet syndrome.^{[citation needed][10]}

(same source)