Autistic Spectrum Disorder (ASD) is a neurodevelopmental condition that affects an individual’s social interaction, communication abilities, and behavioural patterns. Because the presentation and severity of symptoms vary widely between individuals, it is described as a ‘spectrum’ disorder.
Globally, approximately 1–2% of children are affected by ASD, with boys diagnosed significantly more often than girls at a ratio of approximately 4:1. In Hong Kong, the prevalence of autism has been rising in recent years. According to data from the Education Bureau, over 10,000 students were diagnosed with autism in the 2019/20 academic year. Psychiatrists diagnose autism through detailed history-taking, behavioural observation, and standardised assessment tools. During this process, doctors work closely with parents and teachers to gather comprehensive information on the individual’s behaviour and academic performance.
Early identification and intervention are critical. Research shows that targeted support provided before the age of 3 can significantly improve social, communication, and learning outcomes for children with ASD, enabling them to achieve greater independence and participation in family, school, and community life.
Core Symptoms
ASD is characterised by two core areas of difficulty:
- Social communication and interaction: difficulty understanding and responding to social cues, delayed or unusual language development, reduced eye contact, and challenges forming and maintaining friendships
- Restricted and repetitive behaviours: strong preference for routines, intense focus on specific interests, repetitive movements (such as hand-flapping or rocking), and resistance to change
Some individuals with ASD are also highly sensitive — or under-sensitive — to sensory input such as sounds, lights, textures, or smells. Many individuals with ASD also have remarkable strengths in specific areas, such as memory, mathematics, or creative thinking.
Diagnosis
Diagnosing ASD requires a comprehensive assessment by a psychiatrist, paediatrician, or clinical psychologist. This includes detailed developmental history and behavioural observation. In addition, standardised clinical assessments—such as the Autism Diagnostic Observation Schedule (ADOS‑2) and the Autism Diagnostic Interview‑Revised (ADI‑R)—together with cognitive and language evaluations, provide further valuable information to support diagnostic accuracy.Diagnosis is not based on a single test — it requires an integrated review of information from multiple sources. If parents notice any concerns about their child’s language, social development, or behaviour, early assessment is strongly recommended.
Treatment and Support
In terms of treatment, psychiatrists develop personalised care plans tailored to each individual’s needs. These may include:
- Applied Behaviour Analysis (ABA): uses positive reinforcement to help individuals learn social skills and reduce challenging behaviours
- Speech Therapy: improves verbal and non-verbal communication skills
- Occupational Therapy: addresses sensory sensitivities and builds daily living skills
- Medication: may be used to manage co-occurring symptoms such as anxiety or attention difficulties
- Parent training and family support: equips parents with strategies to support their child at home, ensuring consistent support across environments
ASD is not caused by poor parenting. Every individual with ASD is unique, with their own strengths and potential. With professional support and the understanding of those around them, individuals with ASD can find their place in society and live meaningful lives. If you have any concerns about your child’s development, please do not hesitate to contact The Blossom Clinic for an assessment.
