1. stuttering,slurring,and slow speech are prevalent among the possible speech problems from brain trauma [ loss of common words or inability to form sentences correctly], i.e. cognitive problem, consult with a neuro-psychologist
for detailed examination [higher functions].
.Remediation focuses on improving skills that have been lost or impaired.
.You should discuss any questions or concerns you have with a physiatrist [rehabilitation
2. Tingling & numbness [paresthesia] are somewhat common symptoms after a concussion, [as scan showed no brain damage or broken neck /back] thus possibilities arising from these can be excluded.
consult with an orthopedic/general surgeon
regarding any nerve damage for hand numbness
3. as rest of the symptoms are associated with cranial nerves functions, thus examination of cranial nerves [especially 7th nerve (sensory function-anterior 2/3 rd of the tongue),9th nerve (sensory function-posterior 1/3 rd of pharynx] along with weakness of lower cranial nerves [bulbar palsy] should be tested and examined by a neurologist