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Doctor insights on: Can Excess Caffeine Cause Rashes

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Can caffeine cause your body rash rapidly during the hot day?

Can caffeine cause your body rash rapidly during the hot day?

Its a stimulant: You can have an allergy to caffeine which presents with hives or rash after ingesting. My guess is that if you only get a rash on a hot day it is not due to the caffeine.

Dr. John Chiu
2,648 Doctors shared insights

Skin Rash (Definition)

A skin rash is a symptom in which a person has changes on part or all of his skin, such as color changes, bumps, blisters, oozing, peeling, ...Read more


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Can too much caffeine cause a skin rash?

Can too much caffeine cause a skin rash?

No, but....: It would not but may heighten your sense of any degree of itching and when you scratch your skin, a rash if born.

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Is it more likely to have an allergy to caffeine, or stimulants in general? Skin rashes appear on lower face and upper chest. Testing for this?

Is it more likely to have an allergy to caffeine, or stimulants in general? Skin rashes appear on lower face and upper chest. Testing for this?

Quite rare: I don' recall ever seeing someone allergic to caffeine. As each stimualnt drug is quite different chemically from others an allergy to all stimulants is even less likely. There is also no skin or blood test for such an allergy but that doesn't mean it can't be done. A double-blind challenge is the method used to establish a relationship between a cause & an effect. Your local allergist can help.

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When I drink a lot of caffeine (full soda, cup of coffee 5 hour energy) I get a rash, it's hard to breathe, and I start palpitating, am I allergic?

When I drink a lot of caffeine (full soda, cup of coffee 5 hour energy) I get a rash, it's hard to breathe, and I start palpitating, am I allergic?

Caffeine: Sounds like you are sensitive to caffeine. A rash can sometimes occur from boing nervous. There are no similarities in what you drink to indicate an allergy other than caffeine and that does not produce an allergy.

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Can having excessive amounts of caffeine cause you to fail the visual field test,?

Can having excessive amounts of caffeine cause you to fail the visual field test,?

No: Caffeine consumption does not interfere with your visual field data. If, however, you are extremely jittery, you may be more nervous and overly responsive with the hand held clicker which may lead to higher percentage of false positives and fixation losses. The latter decreases the reliability of the visual died results.

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Can drinking high quantity of caffeine cause excessive irritability, actions that resemble someone out of control, on edge, manic, hard to reason with?

Yes, it can happen: In large quantities, this can indeed happen. For some sensitive folk, less can do it. For very sensitive (allergic) folk, any can. If this is you, you need to consider reductions in quantity or avoiding it all together. I'd limit my intake to really great coffee in small amounts. It's your choice! Good luck.

Dr. Alan Ali Dr. Ali
2 doctors agreed:
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Will Adderall (dextroamphetamine and racemic amphetamine) cause cravings for caffeine, sugar and excessive shopping?

Dr. Alan Ali Dr. Ali
2 doctors agreed:
Will Adderall (dextroamphetamine and racemic amphetamine) cause cravings for caffeine, sugar and excessive shopping?

Adderall (dextroamphetamine and racemic amphetamine): Stimulants can elevate Dopamine and cause such behaviors, especially in predisposed individuals such as ones with mood disorders or impulse control problems.

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What causes caffeine to take so long to take effect on me?

What causes caffeine to take so long to take effect on me?

Caffeine metabolism: Caffeine is metabolized by a liver enzyme. If you have a particular common gene mutation what is known as a snp (single nucleotide) polymorphism) you may be a rapid metabolizer of caffeine, which means it gets broken down more quickly generally requiring you to have to take in more before feeling any effect. If you were a slow metabolizer you would feel the effect more quickly and stronger.

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Can caffeine cause you to be itchy?

Can caffeine cause you to be itchy?

Uncommon: Caffeine being a stimulant could activate itching but would be an uncommon response. However if you demonstrate the effect repeatedly, it must be valid that it affects you in that manner and I suppose you could block the reaction by taking an antihistamine a half hour before drinking a caffeinated beverage.

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Can caffeine cause itching?

Can caffeine cause itching?

Yes: I have heard of this happening to others.

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Will caffeine cause an anxiety attack?

Will caffeine cause an anxiety attack?

Caffeine can trigger: A panic attack as can the combination of caffeine and sugar. If you are prone to panic attacks avoid both caffeine and processed sugars.

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Can caffeine -coffee cause a headache?

Can caffeine -coffee cause a headache?

No: Caffeine does not directly cause headache, too much of the substance can trigger “caffeine rebound.” A caffeine rebound headache occurs from withdrawal of caffeine after a sufferer continually consumes too much of the substance.

Dr. Cornelia Franz
1,059 Doctors shared insights

Rash (Definition)

A rash is a change to skin condition which can affect color, appearance, or texture. It may or may not ...Read more