A lawyer who appeared in court to plead guilty for a client of accused fraudster Philip Whiteman allegedly without the client's knowledge has been accused of lying under oath and asked if she had a medical condition because her memory was so bad.

Reem Nassef told the Federal Court during public examinations into Mr Whiteman's alleged $100 million tax scam that she had zero recollection of any events that took place during 2016 because it was two years ago.

Lawyer Reem Nassef Credit:Instagram

Ms Nassef's severe lack of memory and abrasive responses led to the lawyer running the examinations for Pitcher Partners, Ben Gibson, to ask if she had a medical condition or had been influenced by other witnesses to not give full evidence.

"Do you have any medical reason why your recollection of recent events is poor," Mr Gibson asked.