If yes what are the sign to know that one is becoming a trading addicts?
Yes, trading is addictive, but the only difference is that its addiction is not as rampant/tough as that of gambling and others.
The reason is that a bigger money is involved in trading, unlike gambling, where you can continue to gamble a little or a big amount, or a mix of the two, without control. The money in trading always teaches people that lesson and forces them to quit it more easily.
How do you know you are addicted to trading? Just as with other addictions, you will be unproductively and uncontrollably do it.
You are actually right about what you said here, trading is also addictive, but it quite easy to stop, because the damage it does to your mental health and your finances is nothing compared to gambling, in gambling you might think that it's not just your day, and due to the fact that the money you are staking with is not that too big, you will keep on betting even when you are constantly losing, but with trading, the damage is always huge, so you wouldn't be able to afford that same amount of losses, and if you still want to, it might take you some time to recover back such money to try again.
But I have always said this countless times, the best way to avoid addiction in gambling, is gambling with an amount you can afford to lose, then in trading, for the sake of your mental health and emotions, try to trade with what you can afford to lose, so that you wouldn't get into deep shit emotionally or financially when things are going against you or is already against you.