Why my baby crying for along time?

baby crying for a long time  can sometimes make parents panic and worry. Is it normal baby crying for a long time?
If the baby is examined by a doctor and otherwise healthy, the baby keeps crying still get into the normal phase.
There is a tendency to have a crying baby is different when you're sick or feeling hungry, so parents should use their instincts to determine whether the baby should be checked to the doctor or not.
Quoted from Babycenter, Friday (30/07/2010) a study showed that the crying baby's developments follow a pattern known as the crying curve (Crying curve), which occurs during the first few months of life.
Usually the baby will often cry at the age of 2-3 weeks and reached a peak at the age of 6-8 weeks. Then after that will begin to decline and reached its lowest level during 4-month-old.
Sometimes babies cry more in the afternoon at night. This is because at the time the baby had to release tension after a long day.
Infants are also susceptible to colic is defined as uncontrollable crying baby. There are several things that could be considered that the baby is likely to experience colic, which is a baby aged less than five weeks, crying for more than three consecutive hours and for three days or up to a week.
If the baby is crying for no apparent reason and it's hard to be appeased, should parents do not express frustration with shaking the baby. Because if it is too hard shaking of the baby, can cause brain damage and can lead to shaken baby syndrome .
Crying is how babies communicate with others, especially parents, this is because the baby could not communicate in other ways. For new couples to be parents, would be difficult to interpret what the meaning of the crying baby.
There are 10 reasons why babies cry, namely:

   1. Hungry baby
   2. The baby uses a diaper was full or dirty, so the baby felt uncomfortable.
   3. Sleepy baby and needed to sleep.
   4. Babies want to be picked up.
   5. Experiencing a problem in the stomach, such as colic or flatulence.
   6. Surrounding environment is too cold or hot.
   7. Feeling cramped or too small, for the clothing or bed.
   8. Babies will grow teeth
   9. Want more stimulation or arousal.
  10. Babies feel ill or uncomfortable.

Parents should not allow the baby continued to cry, because if the baby cried harder can cause hormonal chain reaction that ultimately can stimulate the adrenal glands to release stress hormones.
If this incident continues then it could generate a lot of stress hormones that can damage a baby's brain. 

 Source detik.com