Diazipan and Tramadol?

Interactions between your selected drugs
Major
diazepam tramadol
Applies to: diazepam, tramadol
Using narcotic pain or cough medications together with other medications that also cause central nervous system depression can lead to serious side effects including respiratory distress, coma, and even death. Talk to your doctor if you have any questions or concerns. Your doctor may be able to prescribe alternatives that do not interact, or you may need a dose adjustment or more frequent monitoring to safely use both medications. Do not drink alcohol or self-medicate with these medications without your doctor's approval, and do not exceed the doses or frequency and duration of use prescribed by your doctor. Also, you should avoid driving or operating hazardous machinery until you know how these medications affect you. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

More info: https://www.drugs.com/interactions-check.php?drug_list=862-0,2221-0

Tramadol:

Nervous system
Very common (10% or more): Dizziness (up to 28%), somnolence (up to 25%), headache (up to 32%),
Common (1% to 10%): Confusion, coordination disturbance, tremor, paresthesia, hypoesthesia
Uncommon (0.1% to 1%): Migraine, sedation, syncope, disturbance in attention
Rare (less than 0.1%): Epileptiform seizures
Postmarketing reports: Seizures

https://www.drugs.com/sfx/tramadol-side-effects.html

As you can read a rare s.e. is Epileptiform seizures which translates to a convulsion or attack of epilepsy.

Diazepam

Nervous system
Very common (10% or more): Drowsiness/somnolence (up to 23%)
Common (1% to 10%): Anterograde amnesia/amnesia, ataxia, nervousness, unsteadiness, incoordination, impaired motor ability, hyperkinesia, tremor, epileptic attacks, sedation, headache, dizziness, slurred speech, hangover effect, decreased/reduced alertness, disrupted sensory perception
Uncommon (0.1% to 1%): Concentration difficulties, balance disorder
Rare (0.01% to 0.1%): Memory loss, dysarthria, syncope, unconsciousness, nystagmus, convulsions/grand mal convulsions, vertigo, lightheadedness, dystonia/dystonic effects, extrapyramidal effects, abnormal taste, hypersensitivity to physical, visual, and auditory stimuli
Frequency not reported: Oversedation, dementia, lethargy, minor EEG pattern changes
Postmarketing reports: Speech disorder.

Common s.e.:
Epileptic attacks

Rare:
convulsions/grand mal convulsions

https://www.drugs.com/sfx/diazepam-side-effects.html