Understanding Mental Health In The Adolescent Age Range

Adolescence is the period of life between childhood and adulthood. It’s a phase of rapid development, not just physically, but also emotionally, cognitively, and socially. While this period can be exciting in many ways for adolescents and their families, it can also come with various stressors and even mental health challenges. Understanding the most common changes of adolescence may help caregivers better support their child and recognize when to reach out for more support from an in-person or online therapist.

What is the adolescent age range?

Many people assume adolescence ends at 18 because this age signals legal adulthood in many places. However, researchers have come to believe that this cultural milestone may not coincide with the true end of adolescent development. 

Different health authorities have slightly different stances when it comes to defining the exact age range of adolescence, but most agree that it extends beyond 18. The World Health Organization lists adolescence as lasting from age 10 to age 19, but other authorities say it lasts until age 24 or even later. Definitions and age ranges of adolescence may vary depending on culture, research focus, and other factors. Regardless, it’s a significant period that can involve many changes in a young person’s life.

The three stages of adolescence 

Each stage of adolescence is typically accompanied by significant developmental changes. Learning about common changes during the three stages—early, middle, and late—may help parents and teens understand what to expect and learn how to promote adolescent well-being at every age. Working with an online therapist may also help a parent or a teen navigate the challenges of this phase of life.

Early adolescence (ages 10-13)

Early adolescence is often marked by puberty and rapid growth. A young person going through this stage may notice their height and weight changing. For those assigned male at birth, a change in voice, a more prominent Adam's apple, and genital changes may occur. For those assigned female at birth, menstruation often begins, and breasts may develop. Most teens may also notice more hair growth on their body. 

Neurologically, the brain of an early adolescent is still developing rapidly. As a result, younger adolescents may have cognitive experiences like:

• Frequently using all-or-nothing thinking
• Feeling self-conscious about their appearance around peers
• Experiencing egocentrism, or thinking mainly about themselves

Middle adolescence (ages 14-17)

In the middle stage of adolescence, symptoms of puberty for those assigned female at birth may begin to subside. Many individuals assigned male at birth may experience growth spurts, a deepening voice, and increasing testosterone levels. Some adolescents may develop an interest in sexual activity during this stage, which is why many parents and caregivers choose to speak to their teens about sexual health and safety around this age. 

During this stage, teens may also develop the ability to engage in abstract thinking, which could help them form their own identities. They might often think about the future and become better able to set clear goals. In middle adolescence, many teens establish friend groups or close connections with others.

Late adolescence (ages 18-20+)

Again, some health authorities say that adolescence ends at 19, while others indicate that it may extend well into the 20s. Either way, late adolescents typically experience the end of physical puberty. Neurologically, they may demonstrate the capacity to show more concern and compassion for others. They might have developed a sense of self separate from their parents or peer group, although relationships often continue to be an essential part of their lives. An individual in this phase may also start solidifying aspects of their identity or core values. Once the final neurological, emotional, and social developments of late adolescence are complete, the individual may be considered an adult.

Common developmental changes in adolescence

Adolescence is a period of rapid growth and development—not just physically, but also cognitively, emotionally, and in other ways. While each individual may develop at their own pace, there are some common changes that most adolescents tend to experience.

Physical changes

Adolescence is typically marked by the body changes of puberty, which is “the stage of development when the genital organs reach maturity, and secondary sex characteristics begin to appear.” Depending on the individual’s sex, this phase may be associated with physical changes like growth spurts, the growth of body hair, the deepening of the voice, the first period, etc. 

Emotional and mental health changes

Children in this stage of life tend to feel more self-conscious, which may be related to the process of identity formation that tends to occur during adolescence. Many adolescents also experience strong emotions during this phase, which may sometimes seem alarming to parents. 

Intense feelings can be normal during this time of rapid emotional development. However, parents and caregivers might look out for any signs of mental health disorders in their child so they can connect them with professional support if needed.

Social changes

The way a child relates to their peers will often evolve during adolescence. They may experience:

• An increased desire for belonging, which could lead to peer pressure
• A stronger sense of self and identity
• A stronger sense of right and wrong 

These social changes might coincide with a desire for more independence and autonomy, which may lead an adolescent to have more conflict with or distance from their parents and family life. Parents and caregivers often benefit from seeking a balance between allowing their child to assert age-appropriate independence while still providing structure and emotional support that isn’t perceived as controlling.

Why adolescence can be a difficult time

For both a child and their family, adolescence can sometimes be a trying period due to the flurry of significant life changes that tend to occur. Many teens also face increasing pressures and expectations related to academics and other responsibilities, which may cause stress. Mood swings and the desire for independence, often associated with this developmental phase, may also create conflict and friction between the adolescent and their family members.

Mental health challenges that may develop in adolescence

Self-harm and suicidal thoughts or behaviors can affect some adolescents, too, as can substance misuse and other risky behaviors. Looking out for mental health symptoms in your child and connecting them with a mental health professional if you notice any may be important for their well-being. In many cases, early intervention may improve long-term outcomes in those living with mental health challenges.

In some cases, it may also be helpful for parents and caregivers to seek mental health support in navigating the challenges of parenting. Online therapy may be a convenient way to receive care.

Supporting adolescents throughout their development

In general, adolescents need consistent support and guidance through this often-difficult time of life. Support from family, other relatives, teachers, coaches, and friends may help them navigate stressors and decisions in an emotionally healthy way. 

How parents and caregivers can provide support

Some strategies for supporting a child through adolescence can include:

• Maintaining open communication. While an adolescent may come to their parents less often due to an increased need for independence, it may be important to let your child know you’re always there to listen if they do need to talk.
• Encouraging healthy habits. Self-care practices like eating nutrient-rich meals and getting enough sleep and exercise may be crucial for adolescent development and emotional regulation, so parents might encourage habits like these.
• Modeling emotional regulation. Parenting an adolescent may be frustrating at times, so it might help to use regulation strategies when emotions get heightened. These techniques may help you manage your feelings and model positive coping methods for your child.
• Setting boundaries with device and social media usage. Problematic usage of devices and social media may negatively impact teen mental health. Setting boundaries to help limit your teen’s device or social media use and talking to them about online safety may be important.
• Speaking openly about mental health. Mental health stigma may prevent adolescents from asking for help when they need it. Speaking openly about mental health in a non-stigmatizing way may increase help-seeking behaviors in a young person.

Receiving online mental health support

Both parents and teens may benefit from receiving professional mental health support as they navigate life’s challenges. A therapist can help teens navigate the stressors and pressures of adolescence. Also, therapy can help caregivers see the “big picture” and cope with stress in a healthy way at various phases of their parenting journey. 

However, regularly traveling to and from in-person therapy appointments is not always an option. For those who prefer the convenience of virtual care, online therapy platforms like BetterHelp (for adults) and TeenCounseling (for teens ages 13–19) are available. Online therapy allows users to get matched and then meet with a licensed therapist from the comfort of home. This format can be more convenient than attending in-office sessions, and online therapy also tends to be more affordable than in-person care.

Online therapy can also simplify the process of finding a therapist. With BetterHelp, you can start by sharing your preferences in a provider via the onboarding questionnaire. For example, some women prefer to meet with a woman therapist, or a person might prefer to work with someone who shares their cultural background. BetterHelp can then match you with a provider according to the preferences you shared. If the therapist you’re matched with isn’t the right fit, you can switch any time for no additional cost.

Is online therapy effective?

In many cases, online therapy can be an effective form of mental health care. For example, consider a 2023 systematic review and meta-analysis, which suggests that internet-based therapy may often yield similar effects to face-to-face therapy.