Depression is one of the silent killer for any individual like heart attack and high blood pressure.What makes a person feel depressed.There are many reasons such as relationship,family,job,money.So how we know if someone is depressed! The answer is through their actions and negativity about life and many things in this world.
Usually a person who is depressed are always miserable,unhappy and they are always not interested 'bout many things.They want everybody to hate them,to not like them by doing bad things that will make people stay away from them.Some do use drugs and take alcohol and do all the bad habits and doings on earth.In other words they just don't care!
So how can we help them.In my own opinion,if it is severe,and if we are a family of the person who has that,we will take them to a doctor and undergo a counselling.Then of course the doctor will give them a medications to take at the same time.But it is not a guarantee that they will be healed you know why?
Because it depends you know of the person itself if he/she will cooperate. And mostly they don't.They are stubborn and will never listen at all.But for me if I feel depressed I only read and listen to music and always mingle and talk to positive people and go out to socialize.