Dear
jrrdkpr,
Your symptoms are a bit vague unfortunately but differentials can range from trifling things to really serious things. The symptoms you mention can be caused by
1) partial seizures / absence seizures can cause the symptoms you describe
2) severe magnesium deficiency ( less than 1.2) which leads to calcium deficiency and the resultant speech defects , weakness on one side and dizziness
3)Broca's Aphasia ( lesion in your language center) but this is rarely transient( like your 30s attacks) unless you have a very small lesion .
Usually symptoms include:
Nonfluent ( slow) , telegraphic ( "mom go hospital") or muteness of speech
difficulty naming stuff , weakness on the right side ( both arm and leg)
A particular subtype of Broca's seems to fit your description ( it's called aphemia). symptoms include initial muteness followed by a monumental effort to speak - but the speech is often garbled with phonemic substitutions ( shoon instead of spoon). writing and reading are unimpaired.
4) certain types of migraine can cause dizziness and speech disorder during the attack but this is very rare and is seen during the aura preceding a migraine
4)Lots of other causes based on the results of your workup
You need to get an MRI and meet a neurologist ASAP since this requires a thorough history and examination , which can't be done over the internet

unch:
Hope u get better
regards,
Arvind