What anticoagulant medication can cause these skin changes?

1. Apixaban
2. Heparin
3. Rivaroxaban
4. Warfarin

[Image courtesy of Herbert Fred, MD and Hendrik van Dijk via Wikimedia Commons]

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What is most likely contained in this edible product that can cause somnolence and vomiting in a child?

1. Lysergic acid diethylamide (LSD)
2. Methamphetamines
3. Psilocybin
4. Tetrahydrocannabinol (THC)

[Authors own image]

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In addition to local pain and dermal injury, stings from this marine animal can result in what systemic symptoms?

1. Acute liver injury
2. Hypotension, arrhythmia, and cardiac arrest
3. Nausea, vomiting, and respiratory arrest
4. Numbness, tingling, and muscle paralysis

[Image courtesy of Guido Gautsch, Wikimedia Commons]

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Which retained ballistic fragment(s) would be expected to result in elevated blood lead levels in a patient?

1. Fragments in or near a joint space
2. Fragments with an associated fracture
3. Multiple fragments
4. Soft tissue fragments
5. All of the above

[Author’s own image]

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Which of the following chemicals, commonly used in chemical peels, can cause severe, gray colored skin burns upon direct contact?

1. Acetone
2. Hydrogen peroxide
3. Phenol
4. Salicylic acid

[Author’s own image]

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What commercially available product can cause blue-grey discoloration of the skin and conjunctiva with long term use?

1. Benzocaine, 20% oral gel
2. Colloidal silver, 30 ppm liquid solution
3. Ferrous sulfate, 325 mg tablet
4. Methylene blue, 1% oral solution

[Image from Herbert L. Fred, MD and Hendrik A. van Dijk via Wikimedia Commons]

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Improper preparation of this food causes poisoning from which toxic compound?

1. Atropine
2. Cicutoxin
3. Cyanide
4. Oxalic acid

Image from Wikimedia Commons [1]

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