Clinical Research Directory

Inclusion Criteria: * Being 18 years of age or older Exclusion Criteria: * Having a neurological or systemic disease other than Multiple Sclerosis that may affect chewing function * Inability to provide adequate communication or cooperation due to psychiatric disorders * Not being diagnosed with Multiple Sclerosis * Not volunteering to participate in the study * Presence of severe problems preventing questionnaire administration (visual and/or hearing impairments) * History or presence of psychiatric and/or other neurological disorders * Presence of severe neurological findings that may negatively affect cognitive performance (e.g., severe optic neuritis) * Use of medications affecting cognitive functions * Alcohol or substance use * Having experienced a relapse within the last month * Having received corticosteroid treatment within the last month * History of stroke, head and neck cancer, or rheumatic diseases that may affect swallowing and chewing performance