按照老外的说法，nursing strikes happen from 3M to 1Year, 一般几天或者一个星期，我家的也太长了...

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There are many causes for nursing strikes. These include:

- Mastitis. Your milk supply may decrease after a breast infection, and the sodium levels may rise, making the milk taste salty. These are temporary problems, but your baby doesn’t know that.

- Teething. Some babies respond to the discomfort of teething by wanting to nurse more often, while others will refuse to nurse at all. See article on ‘Teething and Biting’ for suggestions on how to handle teething pain.

- Illness. If your baby has a stuffy nose, a cold sore, and ear infection, or thrush in his mouth, nursing may be uncomfortable for him. If he has an ear infection, lying on his infected ear may be uncomfortable. Try nursing him in an upright position or the football hold to avoid pressure on the affected ear. If his nose is congested , ask your doctor about ways to unclog it (usually saline drops, nasal aspirator, humidifier, or he may recommend medications to decrease the production of mucus). See article on ‘Yeast Infections’ for detailed information on how to treat thrush in a baby’s mouth. Anytime a baby’s mouth is uncomfortable, whether the cause is teething or thrush, bottle-feeding is usually more comfortable for him. Don’t feel rejected if he will take a bottle, but refuses the breast. The mechanics of breast and bottle-feeding are quite different, and drinking from a bottle requires less effort and less mouth movement than nursing does. This is one reason that it is preferable to use another method to feed your expressed milk to your baby during a nursing strike, rather than bottles. However, if giving a bottle is the only way to get your baby to eat during a strike, don’t stress about it too much. Most babies will go back to the breast after they feel better, even if they have had a few bottles.

- Reaction to stress. Some babies will respond to negative stimuli by refusing to nurse. This stress may be due to siblings who vie for mother’s attention during nursings, a change in environment (such as travel to a new place or moving to a new house), a mother’s overreaction to being bitten (see article on ‘Teething and Biting’), or severe stress in your life (divorce, death in the family, etc.)

- Prolonged separation from mother. Sometimes a baby will refuse to resume nursing after mom has left him for a weekend or longer.

- Low milk supply. This can be caused by long intervals between nursings, overuse of bottles or pacifiers, or an illness in the mother. This can cause a ‘Catch 22’ situation – your supply is low, so your baby won’t stay on the breast long enough to build it back up; because he doesn’t nurse long enough, your supply doesn’t increase. See article on “Increasing Your Milk Supply” for tips on building your supply back up.

- A change in the taste of the milk. Applying creams or ointments (other than lanolin especially formulated for nursing mothers, which is odorless and tasteless), use of a new product such as shampoo or deodorant, and rarely, something in your diet (such as dairy products or excessive caffeine) can cause babies to refuse the breast.