### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
A friend experienced sudden short term memory loss over 2 weeks ago while on vacation. Blood tests, MRI , scans, etc. have led to conflicting diagnoses -- including brain tumors, lymphoma and infectious disease . The infectious disease specialist, recently brought on board, said this is a very complicated case. Meanwhile a cranial biopsy was done one week ago and the patient is now having speech difficulties, i.e. thinking one word and saying another, difficulty with word finding / word substitution, etc. Where does one turn to consult with the top diagnosticians for this problem?

### output:

HI MSolkoffE. THANKS FOR YOUR QUESTION. I SUPPOSE YOUR FRIEND IS YOUNG OR MIDDLE AGE AND IN THAT AGE SUDDEN ONSET MEMORY LOSS ARE MAINLY DUE TO ORGANIC CAUSES AMONG THEM BRAIN TUMOR IS THE COMMONEST AND FROM YOUR QUESTION THE BRIAN IMAGING REPORT IS NOT WRITTEN AND WHY CRANIAL BIOPSY WAS DONE THAT ALSO NOT UNDERSTANDABLE BUT THE INFECTION SPECIALIST TOLD ABOUT A COMPLICATED CASE THAT I THINK HE Wants TO MEAN SUBACUTE SCLEROSIS PANENCEPHELITIS-SSPE ONE OF THE COMPLICATION OF MEASLES WHERE PATIENT HAVE THIS KIND OF SUDDEN ONSET MEMORY IMPAIRMENT. SO MY SUGGESTION PLEASE GO TO A NEUROLOGIST AND A NEUROPSYCHIATRIC BOTH AND DO ALL THE NECESSARY INVESTIGATION AS ADVISE BY THEM AS SOON AS POSSIBLE. THANK YOU Chat Doctor. 