What is 2 Year Syndrome? Symptoms and causes

It’s really hard to stop kids with 2 year old syndrome. This period is also very challenging for families. First of all, how do children with 2-year-old syndrome behave? In the section below, we have prepared a detailed article about 2-year-old syndrome.

What is 2 Year Syndrome?

The 2-year-old syndrome refers to the sudden changes in children’s behavior around the age of 2 years. During this time, children may exhibit surprising or frustrating behaviors that we have not seen in their behavior before.

Some of these behaviors include stubbornness, moodiness, aggression, cowardice, difficulty sleeping, and frequent crying. This can make life very difficult for the child and his family.

However, it should be noted that 2-year-old syndrome is a normal stage of development. During this period, children may exhibit these behaviors as they begin to acquire new skills and increase their autonomy.

In summary, the 2-year-old syndrome refers to the behavioral changes children experience around 2 years of age. During this time, children may experience issues such as stubbornness, moodiness, and difficulty sleeping, while increasing their autonomy as they begin to learn new skills. However, this is a normal stage of development and parents should approach this process patiently and positively.

2 years Syndrome Symptoms


The 2-year-old syndrome is a period of time that causes sudden changes in children’s behavior. The signs of these changes can be different for each child, but they can usually be observed as follows:

Stubbornness and Desire for Independence: 2-year-olds can be quite persistent in resisting themselves or not doing things they don’t want to do. At the same time, they may show a desire for independence in making decisions for themselves and going about their own business.

Cry often

Children with 2-year-old syndrome may be more sensitive to crying. Even a small problem can be enough to make them cry.


During this time, children may be grumpier and more irritable than usual. This behavior can sometimes manifest in their relationships with other individuals in the household.


2-year-olds can sometimes show aggression when trying to understand what’s going on around them. This can manifest itself in relationships with other children or adults.

Sleeping problems

Some children may have trouble sleeping during the 2-year-old syndrome period. These problems can include waking up frequently during the night, having trouble sleeping, and having nightmares.

In summary, the 2-year-old syndrome causes sudden changes in children’s behavior. Symptoms of these changes include stubbornness, a desire for independence, frequent crying, moodiness, aggression, and trouble sleeping. These symptoms should be considered a normal developmental stage of children and parents should deal with them with a patient and understanding approach.

How to behave at 2-year-old syndrome?


Children do the opposite of what you say, they don’t want to eat, they don’t want to sleep, they can hit their parents, they can throw themselves on the floor. But remember that this is a temporary period. Think about it and don’t exhaust yourself or your child. So, what responsibilities do families have right now?

  • Give your child opportunities to do simple things that they can accomplish on their own. For example, things like putting on his own clothes, climbing a place, eating his own food.
  • Give your child the opportunity to choose things. Offer age-appropriate options and let him choose one.
  • Do not react harshly to your child’s behavior. If you react suddenly to your child’s behavior, your child’s trust will be broken.
  • If your child tells you something, listen to him until the end. This behavior enhances your child’s freedom of expression.
  • Listen by getting to his height and looking into his eyes. Children learn by seeing, never forget that.
  • Have fun with your child. Play a house or other game with your child and be happy with him.

How to overcome the 2-year-old syndrome?


At this age, children want everything, they jump, jump, run, so they are always moving. He can walk up and down stairs, walk on tiptoe, wash and dry his hands, button up, is very distracted. So what should be done in such cases? Here are the details;

  • Never get angry, punish or insult your child when he misbehaves.
  • If your child gets too angry about something, give him a chance to let go or don’t try to contain his anger.
  • Don’t make long explanations because your child won’t understand the sentences you’ve formed more fully. Make short and concise sentences.
  • Don’t limit your child’s behavior. Don’t control him. Let him do what he wants.
  • Don’t be stubborn with your child. If there is something your child wants, try to fulfill it.
  • While your child is asking you questions, it is very important that you stop what you are doing and deal with him. Let your child ask questions.
  • Don’t use the word no to your child all the time. This makes him insecure and unable to do what he wants.

Causes of 2 years syndrome


While the causes of 2-year-old syndrome are not precisely known, children are seen to undergo many developmental and psychological changes during this time. In addition, environmental factors can also influence behavioral changes during this period. Here are the possible causes of 2-year-old syndrome:

Language development

The 2-year-old syndrome is also an important period for language development. While children are trying to learn to talk during this time, they often have trouble expressing their wishes. This can lead to problems such as not fulfilling children’s wishes and having difficulty communicating.

Desire for independence

2-year-olds act out of a desire for independence. They may want to do their own thing and resist adult interference. This can sometimes lead to behaviors like stubbornness and moodiness.

Physical development

The 2-year-old syndrome is a period when children also grow physically. During this period, children move more to explore their bodies and the people around them. Therefore, they feel the need to do more activities at home or outside the home.

Parental attitudes

Parental attitudes can also influence children’s behavior. In particular, parents who are very strict in controlling and directing their children can increase their children’s stubbornness and desire for independence.

Environmental factors

Environmental factors can also trigger 2-year-old syndrome symptoms. For example, when there is a significant change in children’s lives (for example, the birth of a new sibling, a move, starting kindergarten), this can lead to changes in children’s behavior.

How Long Does 2 Year Syndrome Last?

Age 2 Syndrome is a period in which children live around the age of 2 and usually lasts a few months or a few weeks. However, because every child is different, the symptoms and their duration during this time may also differ.

How is 2-year-old syndrome managed?

To deal with 2-year-old syndrome, it is important to have a patient, understanding and calm attitude. Respecting the child’s desire for independence, setting boundaries, understanding and empathizing with the child’s feelings can also help. It is also important to pay attention to good sleep and nutrition during this period.

When does 2-year-old syndrome start?

Age 2 Syndrome is a period when children live around the age of 2. However, the start and end date of this period may vary from child to child.

Does 2-year-old syndrome pass?

Yes, 2-year syndrome is a temporary period and usually lasts a few weeks or a few months. However, because every child is different, symptoms and their duration may vary.

What Causes 2-Year-Old Syndrome?

While the exact cause of age 2 syndrome is not known, children are known to go through many developmental and psychological changes during this time. Many factors such as language development, desire for independence, physical development, parental attitudes, and environmental factors can cause behavioral changes during this time.

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