Panic and shaking hands after drinking an iced Americano can be caused by sympathetic excitation, hypoglycemia caused by drinking coffee on an empty stomach, organic heart disease, and other reasons.
Iced Americano has a high concentration of caffeine, which is a central nervous system stimulant that promotes sympathetic arousal.
Symptoms of sympathetic nerve excitation include accelerated metabolism, accelerated heart rate, elevated blood pressure, dilated pupils, bronchial dilation, decreased salivary secretion, and increased energy for muscle work. Therefore, after taking caffeine the body can experience the corresponding symptoms of sympathetic excitation, including increased heart rate and increased muscle energy, which is also known as panic and hand tremors.
Drinking coffee on an empty stomach can also lead to panic attacks, because caffeine excites the central nervous system, which can lead to epigastric discomfort, panic and chest tightness, and other symptoms, and hypoglycemic reactions.
Patients with organic heart disease are more sensitive to sympathetic excitation, and are more likely to experience tachycardia causing a decrease in cardiac ejection, leading to insufficient oxygen supply to the tissues, triggering panic attacks and hand tremors.
For people who drink iced Americano after panic tremors, it is recommended to drink less coffee, strong tea and other beverages with high caffeine content, or avoid drinking coffee on an empty stomach, patients with organic heart disease is not recommended to quote coffee. Once symptoms such as panic attacks and shaky hands occur, it is recommended to rest in bed and drink more water to reduce the concentration of caffeine in the body.