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Cannabis Related Symptoms

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In one line

·Today's cannabis contains 20–30% THC (the chemical in cannabis that changes how your brain works), which is 5–10 times stronger than cannabis from 30 years ago.

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Normal physiology

·Your brain makes its own cannabis-like molecules called endocannabinoids (endo = inside). These molecules land on CB1 receptors all over your brain to fine-tune how neurons send messages—keeping mood steady, memory sharp, appetite normal, and the stress alarm ready but not stuck on.

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What goes wrong

·THC from cannabis looks enough like your natural endocannabinoids that it can land on the same CB1 receptors—but THC stays there much longer (hours instead of seconds) and floods far more receptors at once than your body ever would. This jams the brake pedal down across your whole brain, disrupting the careful balance that keeps mood, memory, fear, and appetite steady.

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Hallmark signs

·Severe nausea and vomiting that comes in waves or cycles
·Relief from very hot showers or baths (compulsive bathing)
·Belly pain in the upper stomach area (epigastric pain)
·Anxiety, restlessness, or feeling on edge
·Memory problems or trouble focusing (short-term memory loss)
·Increased appetite or intense hunger ('the munchies')
·Rapid or pounding heartbeat (tachycardia)
·Paranoia, extreme suspicion, or feeling like people are watching or plotting against you

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Red flags · escalate now

·Severe dehydration from non-stop vomiting—dry mouth, dizziness when standing, very dark urine, confusion, or fainting—because this can lead to kidney injury or dangerous salt imbalances in the blood
·New hallucinations, delusions, or paranoia—especially in teenagers or young adults—because cannabis can trigger lasting psychosis in at-risk people, and early treatment improves outcomes
·Chest pain, pressure, or fast, irregular heartbeat, since cannabis raises heart rate and can rarely cause heart attacks, arrhythmias, or strokes, particularly in people with existing heart disease
·Thoughts of self-harm, suicide, or harming others, which can happen during severe anxiety, withdrawal, or psychotic episodes and require immediate safety evaluation
·Severe or unusual belly pain that does not fit the typical upper-stomach cramping pattern, because other emergencies—such as appendicitis, pancreatitis, or bowel obstruction—must be ruled out

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Workup

·Urine drug screen (immunoassay) for THC metabolites
·12-lead electrocardiogram (ECG) and continuous heart monitor
·Blood pressure sitting and standing (orthostatic vital signs)
·Fingerstick blood glucose
·Pulse oximetry (oxygen saturation)
·Mental status exam with attention and short-term memory testing (e.g., recall of three objects after 5 minutes)

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Treatment

·Stop all cannabis use immediately and remove access to cannabis products
·Reassurance, calm environment, and time (supportive care for acute intoxication)
·Short-acting benzodiazepine (e.g., lorazepam 0.5 to 1 mg by mouth or sublingual) for severe panic or agitation that does not improve with reassurance
·Antipsychotic medication (e.g., risperidone 1 to 2 mg or olanzapine 5 to 10 mg by mouth once daily) if psychosis (hallucinations, delusions, paranoia) lasts more than 48 hours or is severe
·Motivational interviewing or cognitive-behavioral therapy (CBT) focused on cannabis use disorder
·Screen for family history of psychosis (schizophrenia, schizoaffective disorder, bipolar disorder with psychotic features) and counsel strict, lifelong avoidance if positive
·Address sleep, housing stability, food security, and daily structure (school, work, meaningful social connection)

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NCLEX trap

·Cannabis symptoms need you to calm the person AND address the root cause. A pill alone won't fix the overloaded CB1 receptors (the brain switches that THC floods and turns on too hard). You must also explore why he is using such strong cannabis and help him stop safely.
·Cannabis causes panic that looks exactly like anxiety disorder, but the cause is different. Always ask about cannabis use first. If he stops using, the panic usually goes away on its own. SSRIs won't fix a THC problem.
·Today's cannabis has 20–30% THC (the chemical that makes you high). That's 6 to 10 times stronger than cannabis from 30 years ago, which had only 3–5% THC. High-strength THC causes real symptoms. Legal doesn't mean safe at high doses.
·Cannabis can cause strange thoughts and even hallucinations (seeing or hearing things that aren't there). But this is NOT the same as schizophrenia. Watch him for 2–4 weeks off cannabis. If the thoughts go away, it was the drug. If they stay, then test for a real psychotic disorder. Don't rush to label or medicate.
·Cannabis use disorder needs both brain support AND life fixes at the same time. Fix only the thinking (therapy) and the broken brain circuits pull him back to using. Fix only the brain chemistry and therapy fails because his life is still hard. You need both or neither works.
·Repeated vomiting from long-term cannabis use (called Cannabis Hyperemesis Syndrome or CHS) can cause real kidney damage from dehydration. Anti-nausea pills won't fix it. You MUST tell him to stop using cannabis immediately. The vomiting won't stop until he quits. Hot showers may help the nausea temporarily, which is a clue this is CHS.

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