The businessman - played by Jordan Smith - will discover his disorder in an upcoming storyline.
At first he decides to keep it to himself, but his change in behaviour is noticed by family and friends.
He also has avoid driving the company car and removes the strobe lights at Charlie's.
"Andrew knows he has to win his friends back and hiding his condition is only going to make things even more strained," an insider told the Daily Star.
"He's acting strangely and demanding that they give him lifts.
"But his close friend Tash Williams really starts to get annoyed with his behaviour and doesn't understand why he can't drive his flash new car.
"Andrew finds it really hard to deal with but deep down he knows he must tell her what he is facing."
The storyline will air on Channel 5 in the UK next month.
Watch Jordan Smith talk to Digital Spy below: