1. Abbreviation for Certified Registered Nurse Practitioner. The definition information for CRNP is provided by Stedman's. You can search our medical dictionary here.he definition information for CRNP is provided by Stedman's. You can search our medical dictionary here.
1 Other symptoms include fever, chills, nausea, vomiting, muscle aches and hemolytic anemia (a condition where the red blood cells are destroyed).  People bitten by an unseen spider sometimes blame the brown recluse spider because their bite resembles a brown recluse spider bite.
In most cases of a black widow spider bite, symptoms consist only of: 1  Minimal to sharp pain followed by swelling and redness at the site of the bite. 2  One or two small fang marks like tiny red spots.