Raynaud's phenomenon as an adverse event associated with Bruton tyrosine kinase inhibitor.

The article describes the case of a 60-year-old man with 12-month history of discolouration of the fingers after cold exposure or emotional distress. Topics discussed include his medical history, symptoms that appeared after cold exposure or emotional stress, which was compatible with his history of Raynaud's phenomenon (RP), and conclusion on the recurrence of RP.