Many things cause the baby can suddenly become weak, even though he was previously actively playing and joking. If this happens to experience this, parents must be vigilant and find out immediately. It could be the cause is a health disorder that needs to be treated immediately.

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Generally, the healthy baby will look cheerful, actively move arms and legs, and crawl or walk to and fro without tirelessness. However, when they feel something wrong with their body, they may not be excited to do activities, tend to be quieter, and look weak.

Here are the causes of babies suddenly feeling weak:

1. Dehydration
Dehydration in babies can be caused by diarrhea. When the baby has diarrhea, the baby secretes more fluid than regular bowel movements. Moreover, diarrhea more often than usual. It makes the baby at risk of dehydration and feeling weak suddenly.

Dehydration can also occur if the baby has a fever or heat. In this condition, the baby will sweat a lot to release more fluid from the body. If this is not corrected by adequate fluid intake, the baby may become dehydrated.

In addition to weakness, the baby's dehydrated signs are the concentrated urine, dry lips, mouth, drowsy, fussy, urinating, becomes less frequent, lack of tears when crying, and are reluctant to drink.

2. Lack of oxygen
The lack of oxygen can cause weakness. Lack of oxygen supply can occur if the baby has problems in the lungs or heart.

The clinical signs and symptoms of lack of oxygen are lips and fingertips appear bluish, difficult to breathe, weak, and the skin looks pale. If the parents find these, the baby must get resuscitation immediately.

3. Infections
Infections can cause the baby to feel lethargic and weak suddenly. Baby's immune system is generally not as adequate as adults. As a result, babies are more easily infected by various types of viruses and bacteria.

The clinical signs and symptoms that the baby has an infection are lost appetite, lethargy, sudden increased or decreased body temperature, and crying often.

4. Drug poison
The baby's clinical signs and symptoms experiencing poisoning or overdose drugs are vomiting, difficulty breathing, abdominal pain, convulsions, weakness, and unconsciousness.

Drug poisoning or overdose can be experienced by babies actively crawling and inserting all the objects they hold. Parents may accidentally put dangerous drugs or chemicals in place easily accessible to babies.

5. Anaphylactic shock
Anaphylactic shock is a shock caused by a severe allergic reaction. In this condition, the immune system overreacts and disrupts blood flow and oxygen absorption throughout the body.

Signs of the baby experiencing anaphylactic shock are shortness of breath and difficulty breathing, blueness of the skin, swelling tongue or lips, nausea and vomiting, weakness, until unconsciousness.

If the baby is suddenly weak or not as active as usual, especially accompanied by symptoms such as fever, vomiting, or cold sweat, the parents should immediately take him to the nearest doctor to get appropriate treatment and therapy.