separation of a nail from its normal attachment to the nail bed 
                                                            
                                                     
                        
                                                
                        
                        
                            Nail abnormality and discoloration seen in psoriasis and reactive arthritis; may be accompanied by pitting of the nail in psoriasis.
                                                            
                                                     
                        
                                                
                        
                        
                            A symptom of nail psoriasis, onycholysis causes a lifting or separating of the nail from the nail bed.
                                                            
                                                     
                        
                                                
                        
                        
                            loosening of the nail plate from a border. May result in Onychoptosis.
                                                            
                                                     
                        
                                                
                        
                        
                            loosening and lifting of the nail plate from a border.