The Board of Examiners for Nursing on Wednesday disciplined four nurses, including three for their abuse of alcohol or drugs. The board suspended the registered nursing license of Lori Riley of Sharon after finding that she posed a clear and immediate danger to the public. Records show that in 2015, while working for All About You Homecare in Torrington, she took Percocet meant for a patient, replaced it with Tylenol and falsified the patient’s medical record. From 2014 to 2016, Riley abused Percocet, Oxycodone and Vicodin, records show. This past January, she signed a plan to enter a confidential rehabilitation program, but records show she failed to comply with the program or begin outpatient treatment for substance abuse.