| Reaction | |
|---|
| Abnormal dreams (66) | |
| Acute disseminated encephalomyelopathy (4) | |
| Ageusia (taste loss) (54) | |
| Aggression (45) | |
| Agitation (140) | |
| Akathisia (56) | |
| Allodynia (3) | |
| Altered mental status (7) | |
| Amnesia (80) | |
| Amyotrophic lateral sclerosis (2) | |
| Aneurysm (7) | |
| Anorexia (294) | |
| Anorgasmia (12) | |
| Anosmia (17) | |
| Antiphospholipid antibody syndrome (5) | |
| Anxiety (268) | |
| Apathy (1) | |
| Aphasia (13) | |
| Arachnoiditis (6) | |
| Aseptic meningitis (35) | |
| Attention disturbances (1) | |
| Balance disorder (16) | |
| Behavioral disturbances (24) | |
| Bell's palsy (facial palsy; idiopathic facial palsy) (3) | |
| Bradykinesia (8) | |
| Bradyphrenia (1) | |
| Brain abscess (1) | |
| Brain atrophy (3) | |
| Brain edema (1) | |
| Brainstem dysgenesis (2) | |
| Carotid artery dissection (1) | |
| Carpal tunnel syndrome (5) | |
| Cataplexy (3) | |
| Catatonia (19) | |
| Cerebellar degeneration (1) | |
| Cerebellar syndrome (4) | |
| Cerebral edema (9) | |
| Cerebral hemorrhage (28) | |
| Cerebral ischemia (12) | |
| Cerebral vasculitis (angiitis) (2) | |
| Cerebrovascular accident (25) | |
| Cerebrovascular adverse effect (3) | |
| Chiasmal neuritis (1) | |
| Chills (203) | |
| Chorea (10) | |
| Choreoathetosis (9) | |
| CNS adverse reaction (2) | |
| CNS depression (3) | |
| Cognitive impairment (60) | |
| Coma (47) | |
| Compulsions (29) | |
| Confusion (168) | |
| Cytokine release syndrome / cytokine storm (8) | |
| Decreased consciousness (21) | |
| Delirium (105) | |
| Delusions (14) | |
| Delusions of parasitosis (6) | |
| Dementia (12) | |
| Demyelinating neuropathy (2) | |
| Demyelination (9) | |
| Depersonalization (8) | |
| Depression (313) | |
| Disorientation (22) | |
| Dissociation (1) | |
| Disulfiram-like reaction (6) | |
| Dysarthria (40) | |
| Dysesthesia (42) | |
| Dysgeusia (taste perversion) (448) | |
| Dyskinesia (64) | |
| Dysphasia (8) | |
| Dysphoria (14) | |
| Emotional lability (18) | |
| Encephalitis (21) | |
| Encephalopathy (112) | |
| Epilepsy (2) | |
| Euphoria (33) | |
| Extrapyramidal symptoms (36) | |
| Fainting (see syncope) | |
| Fall (9) | |
| Fetal hydantoin syndrome (1) | |
| Fever (pyrexia) (584) | |
| Forehead swelling (1) | |
| Gait instability (77) | |
| Guillain-Barré syndrome / acute inflammatory demyelinating polyradiculoneuropathy (39) | |
| Hallucinations (157) | |
| Hallucinations, olfactory (2) | |
| Headache (1054) | |
| Hoigne's syndrome (5) | |
| Horner's syndrome (1) | |
| Hostility (11) | |
| Hyperactivity (21) | |
| Hyperalgesia (16) | |
| Hyperesthesia (87) | |
| Hyperkinesia (2) | |
| Hypersexuality (6) | |
| Hypersomnia (12) | |
| Hyperthermia (16) | |
| Hypervigilance (1) | |
| Hypoesthesia (numbness) (76) | |
| Hypogeusia (5) | |
| Hypokinesia (11) | |
| Hypomania (13) | |
| Hyporeflexia (3) | |
| Hyposmia (4) | |
| Hyposomnia (2) | |
| Hypothermia (20) | |
| Impaired concentration (45) | |
| Impulse control disorder (14) | |
| Incoordination (23) | |
| Insomnia (426) | |
| Intracranial hemorrhage (40) | |
| Intracranial pressure decreased (2) | |
| Intracranial pressure increased (intracranial hypertension) (19) | |
| Intraventricular hemorrhage (4) | |
| Irritability (106) | |
| Ischemic injury (1) | |
| Ischemic stroke (14) | |
| Jittery feelings (1) | |
| Leukoencephalopathy / posterior reversible encephalopathy syndrome (PRES)) (81) | |
| Loss of consciousness (1) | |
| Malaise (3) | |
| Malignant hyperthermia (7) | |
| Mania (72) | |
| Meige's syndrome (3) | |
| Memory loss/memory impaired (54) | |
| Meningococcal infection (17) | |
| Meningoradiculitis (1) | |
| Mental status changes (2) | |
| Migraine (56) | |
| Mood changes (74) | |
| Multiple sclerosis (10) | |
| Myelitis (8) | |
| Myelo-optic-neuropathy (2) | |
| Myokymia | |
| Narcolepsy (4) | |
| Narcosis (2) | |
| Nerve dysfunction (3) | |
| Nervousness (84) | |
| Neuralgic amyotrophy (1) | |
| Neuroleptic malignant syndrome (61) | |
| Neurological adverse effect | |
| Neuromyopathy (1) | |
| Neuropathy (5) | |
| Neuropsychiatric / neuropsychological adverse effect (19) | |
| Neurotoxicity (323) | |
| Nightmares (41) | |
| Noctambulism (see somnambulism) | |
| Notalgia paresthetica (1) | |
| Numbness (see hypoesthesia) | |
| Orbitocranial inflammation (1) | |
| Pain (292) | |
| Palinopsia (4) | |
| Panic attack (20) | |
| Paralysis (22) | |
| Paranoia (27) | |
| Parasomnia (see the sleep-related adverse reactions) | |
| Paresis (8) | |
| Paresthesias (483) | |
| Parkinsonism (92) | |
| Parosmia (43) | |
| Pavor nocturnus (1) | |
| Perioral paresthesias (5) | |
| Peripheral neuropathy (154) | |
| Periventricular leukomalacia (2) | |
| Posterior reversible encephalopathy syndrome (see leukoencephalopathy) | |
| Presyncope (6) | |
| Primary central nervous system lymphoma (PCNSL) (2) | |
| Pseudohallucinations (5) | |
| Pseudoparkinsonism (1) | |
| Pseudotumor cerebri (28) | |
| Psychiatric adverse effect (8) | |
| Psychomotor impairment (8) | |
| Psychosis (140) | |
| Punding (3) | |
| Rabbit syndrome (9) | |
| Restless legs syndrome (42) | |
| Restlessness (67) | |
| Rigors (56) | |
| Schizophrenia (13) | |
| Sedation (110) | |
| Seizures (332) | |
| Sensory disturbances (7) | |
| Serotonin syndrome (59) | |
| Sexual fantasies (1) | |
| Shivering (32) | |
| Shock (21) | |
| Sleep apnea (3) | |
| Sleep disturbances (55) | |
| Sleep-related disorder (61) | |
| Sleep-related eating disorder (SRED) (7) | |
| Sleepwalking (see somnambulism) | |
| Slurred speech (9) | |
| Somnambulism (sleepwalking; noctambulism) (18) | |
| Somnolence (drowsiness) (356) | |
| Speech disorder (17) | |
| Spinal cord compression (2) | |
| Spinal cord infarction (1) | |
| Spinal shock | |
| Status epilepticus (36) | |
| Status gelasticus (3) | |
| Stroke (80) | |
| Stupor (7) | |
| Stuttering (9) | |
| Subarachnoid hemorrhage (10) | |
| Subdural hemorrhage (12) | |
| Suicidal ideation (106) | |
| Syncope / fainting (181) | |
| Tardive dyskinesia (35) | |
| Tardive seizure (1) | |
| Tic disorder (33) | |
| Tourette's syndrome (1) | |
| Trembling (17) | |
| Tremor (283) | |
| Tumor pain (2) | |
| Twitching / myokymia (31) | |
| Vertigo / dizziness (802) | |
| Warm feeling (17) | |
| Yawning (12) | |
