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.
Bites from black widow and brown recluse spiders cause visible symptoms but they may also require medical care if the symptoms worsen. Because most people donât feel the bite when it happens, it can be hours or days before symptoms are noticed, which increases the chances of complications from these spider bites.