Failing to take prescribed phenytoin (Dilantin) medication is MOST likely to increase the risk of which condition?

The most likely condition that would be increased by failing to take prescribed phenytoin (Dilantin) is seizures. Phenytoin is an anticonvulsant medication primarily used to manage and prevent seizures in individuals with epilepsy and other seizure disorders. Its mechanism of action stabilizes neuronal membranes and prevents the propagation of seizure activity.

When a patient does not adhere to their prescribed regimen of phenytoin, the concentration of the drug in their system diminishes, which can lead to a resurgence or worsening of seizure activity. This risk is particularly significant for anyone with a history of seizures, as the absence of the medication increases the likelihood of experiencing seizures, which can vary in frequency and severity.

While anxiety, depression, and inflammation may be important considerations in the context of overall patient health, they are not directly related to the pharmacological effects of phenytoin. Instead, the connection between phenytoin non-compliance and seizures is clear and undeniable, making this the most pertinent condition in this scenario.