Possible adverse skin reaction to carvedilol.

As experience with beta-blocker use in patients with congestive heart failure is increasing, enthusiasm for carvedilol use in these patients is also increasing. Dermatological reactions to carvedilol are rare and have not been well described in the literature. A patient who developed an acute dermatological reaction after one dose of 3.125 mg carvedilol is presented. Given the rapid onset of symptoms experienced by the patient after a single, small dose of carvedilol, clinicians should be aware of the potential adverse effects of the drug.