Related Experiment Video
Updated: Aug 4, 2026

13:59
Assaying β-amyloid Toxicity using a Transgenic C. elegans Model
Published on: October 9, 2010
Somatic manifestations of caffeinism
The Journal of Clinical Psychiatry
|May 1, 1981
Summary
Caffeine consumption is linked to various physical symptoms like diuresis, insomnia, and headaches. Higher caffeine intake often correlates with more frequent and severe somatic symptoms.
Area of Science:
- Pharmacology
- Neuroscience
- Internal Medicine
Background:
- Caffeine is a widely consumed psychoactive substance impacting numerous physiological systems.
- Limited research exists on the specific somatic symptoms associated with excessive caffeine intake (caffeinism).
Purpose of the Study:
- To identify and document common somatic symptoms linked to caffeinism.
- To compare symptom frequency across different levels of caffeine consumption.
Main Methods:
- A study involving 124 general hospital patients was conducted.
- Patients' reported somatic symptoms were analyzed and compared based on their categorized caffeine usage (low, moderate, high).
Main Results:
- Diuresis, insomnia, withdrawal headache, diarrhea, anxiety, tachycardia, and tremulousness were the most frequently reported symptoms.
- Significant differences in symptom reporting were observed between low, moderate, and high caffeine users.
- Evidence of dose-response relationships for certain symptoms was apparent.
Conclusions:
- Common somatic symptoms associated with caffeine use include diuresis, insomnia, and headaches.
- Caffeine intake levels correlate with the frequency and type of reported somatic symptoms.
- The observed symptoms are largely attributable to caffeine's known central nervous system and peripheral pharmacological actions.
More Related Videos
Related Concept Videos
Cholinergic Antagonists: Pharmacokinetics
Cholinergic antagonists—such as antimuscarinics—are available in oral, topical, ocular, parenteral, and inhalational formulations. Most antimuscarinics are oral formulations, while scopolamine is available as a topical patch, and ipratropium and tiotropium are available as inhalation aerosols or powders. Atropine, tropicamide, and cyclopentolate are topically instilled in the eye. Most antimuscarinics are lipid-soluble and readily absorbed from the gastrointestinal tract and the conjunctiva.
Cholinergic Antagonists: Pharmacological Actions
Antimuscarinic drugs block muscarinic receptors in multiple systems, including the gut, eye, smooth muscles, respiratory tract, cardiovascular, and central nervous systems. They produce similar effects with varying selectivity depending on the specific agent and tissue. Here are the key pharmacological actions of antimuscarinics:
Gastrointestinal Effects: Antimuscarinics reduce gut contractions, increase gastric emptying, and slow intestinal transit. They partly inhibit gastric acid secretion...
Gastrointestinal Effects: Antimuscarinics reduce gut contractions, increase gastric emptying, and slow intestinal transit. They partly inhibit gastric acid secretion...
Drugs Acting on Autonomic Ganglia: Stimulants
Ganglionic stimulants activate NM nicotinic receptors in autonomic ganglia, falling into two categories: nicotine mimetics [e.g., lobeline, dimethylpiperazine, tetramethylammonium] and muscarinic receptor agonists [e.g., muscarine, methacholine]. The first category's action is rapid and blocked by nicotinic receptor antagonists, while the second category's action is delayed and blocked by atropine-like agents. Nicotine, an alkaloid, affects the heart rate by stimulating sympathetic or...
Coronary Artery Disease III: Clinical Manifestations
Coronary Artery Disease (CAD) is a primary health risk worldwide, leading to significant morbidity and mortality. The condition arises from the buildup of atherosclerotic plaques within the coronary arteries, resulting in diminished blood supply to the heart muscle.The clinical manifestations of CAD vary widely, from asymptomatic stages to severe, life-threatening conditions. Understanding these manifestations is crucial for early diagnosis and effective management.Angina Pectoris: The Warning...
Chronic Kidney Disease II: Clinical Manifestations
Chronic Kidney Disease (CKD) progressively impairs multiple body systems due to the accumulation of uremic toxins, which disrupt cellular functions across various organs.Neurologic symptomsNeurologic symptoms often arise early in CKD, as uremic toxin buildup drives changes in cognitive and motor functions. Patients frequently experience fatigue, headache, confusion, difficulty concentrating, and, in severe cases, seizures. Peripheral neuropathy commonly manifests as burning sensations in the...
Cryptococcal Meningitis
Cryptococcal meningitis is a life-threatening opportunistic infection predominantly associated with HIV/AIDS, accounting for over 100,000 deaths annually worldwide. However, it also affects individuals with other forms of immunosuppression, including those undergoing immunosuppressive therapy, organ transplant recipients, patients with innate immunodeficiencies, and individuals with hematological disorders. The infection is caused mainly by Cryptococcus neoformans and Cryptococcus gattii,...

