| Immunosenescence | Age-related decline in cell-mediated immunity |
| Immunosuppression | HIV/AIDS, chemotherapy, immunosuppressive medications |
| Stress | Physical or psychological stress that suppresses immune function |
| Local trauma | Surgery or injury to the facial nerve region |
| Motor synkinesis | Abnormal facial movements during recovery |
| Hemifacial spasm | Involuntary contractions during recovery |
| Psychosocial impact | Depression, social anxiety, reduced quality of life |
| Databases | OMIMOrphanetClinicalTrialsPubMed |