The symptom that ultimately leads to a diagnosis is called a " cardinal symptom ".
2.
Lipowski described delirium as a disorder of attention, wakefulness, cognition, and motor behaviour, while a disturbance in attention is often considered the cardinal symptom.
3.
The hyperactivity sometimes accompanied by inattentiveness, impulsiveness, and forgetfulness are cardinal symptoms associated with ADHD . As a result, ADHD is known to bring about usually short-lived ( though sometimes dramatic ) mood swings.
4.
Some people with POTS develop acrocyanosis, or blotchy, red / blue skin upon standing, especially over the feet ( indicative of blood pooling ) . 48 % of people with POTS report chronic cardinal symptom of orthostatic tachycardia.