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The head should be examined for any obvious signs of trauma, such as scalp and facial lacerations, abrasions, and contusions. The pupils should be observed for symmetry and light reactivity. If they demonstrate bilateral mydriasis, this may indicate cerebral hypoxia or a toxicological etiology (e.g., anticholinergics, sympathomimetics, selective serotonin reuptake inhibitors, etc.). Miosis is often due to opiate overdose. However, clonidine, antipsychotics, organophosphates, sedative‐hypnotics, and pontine stroke may also cause miosis. Unequal pupils may be found as a normal variant, but they could also indicate impending brain herniation from trauma or a spontaneous intracranial hemorrhage. Any odor on the patient’s breath should be noted, as some odors may provide clues to specific conditions that may benefit from early recognition and treatment. For example, acetone odor is associated with elevated serum ketones, which may indicate diabetic ketoacidosis. The smell of bitter almonds is associated with cyanide poisoning, which could benefit from hydroxocobalamin administration in the field.