What are the common symptoms and indications of depression?

There are many signs and symptoms of depression for a person who is suffering from the disorder of depression. By all these signs and symptoms of depression we can easily identify the depressed person. First of all, the person will be highly agitated. We cannot predict the behavior of the person who is under depression. Signs and symptoms of depression include restless. He will be doing unnecessary things. Signs and symptoms of depression include irritation. He can be furious with little matters easily. One of the signs and symptoms is eating habits will be changed. That is, he may either eat more food or less food than normal person. So he will be either gaining or losing weight accordingly. Signs and symptoms of depression include difficulty for concentrating. He cannot concentrate in his studies, works or other activities. So cannot do the things which need concentration. He will feel fatigue and exhausted easily than normal. He will fell weaker than earlier. He will loose his confidence for doing work or any other tasks. He will feel desperate always. He may think that nobody loves or cares or considers him. He only thinks about the negative sides and bad experiences occurred in his life. An unnecessary guilty feeling will always follow him. Some times it may be very negligible. He will find no interest in enjoyments and entertainments. He always feels worthless and his mind will be filled with the thoughts of death and suicide. The person who is suffering from this disorder will even try to make it practical, that is he will try for suicide. He will be feeling excessive sleepy or inadequate sleepy.