Articles
Knowledge
Guides and articles written by our team of psychologists and psychiatrists
Here we share what we know from the clinic. The articles are written by our psychologists and psychiatrists, drawing on clinical experience and current research. We write about assessment, ADHD, autism, anxiety, depression, personality, trauma and psychotherapy.
Alethia is a psychology clinic in central Copenhagen with psychologists and psychiatrists under one roof. We offer assessment, psychotherapy, psychoeducation and medical treatment for adults. Our team speaks Danish, English, Norwegian and Swedish.
Trauma and ADHD: When the past looks like inattention →
Trauma symptoms can be confused with ADHD. Learn about ACE, hypervigilance, dissociation, and why a thorough assessment requires taking the life history seriously.
Markus Lien, clinical psychologist · March 22, 2026
Autism and masking: What is camouflaging? →
Masking is when autistic people consciously or unconsciously hide autistic traits. Learn about camouflaging, consequences, and how CAT-Q measures it.
Markus Lien, clinical psychologist · March 22, 2026
Autism in women: Signs, masking, and late diagnosis →
Women with autism are often diagnosed late or not at all. Learn about typical signs, masking, and why standard diagnostics often miss women.
Markus Lien, clinical psychologist · March 19, 2026
ADHD symptoms in adults: How it shows up →
ADHD in adults looks different from childhood. Learn about typical symptoms, why many discover it late, and when an assessment makes sense.
Markus Lien, clinical psychologist · March 17, 2026
DIVA-5: What is it and how does it work? →
DIVA-5 is the most widely used diagnostic interview for adult ADHD in Denmark. Learn what it involves, how to prepare, and what to expect.
Markus Lien, clinical psychologist · March 14, 2026
What does private ADHD assessment cost in 2026? →
Typically 9,000–30,000 DKK. See Alethia's prices, what's included, and refund options.
Markus Lien, clinical psychologist · March 12, 2026
ADHD vs. ADD: What's the difference? →
Are ADD and ADHD the same? Understand the difference, the three subtypes, and how both are assessed.
Markus Lien, clinical psychologist · March 9, 2026
ADHD treatment: What are your options? →
Medication, therapy and psychoeducation. Learn about treatment options for ADHD in adults.
Markus Lien, clinical psychologist · March 7, 2026
Autism assessment for adults: What to expect →
What happens during an autism assessment? ADOS-2, AAA, the process and prices at Alethia.
Markus Lien, clinical psychologist · March 4, 2026
ADHD in women: Why it's missed →
ADHD looks different in women. Inattention, inner restlessness and decades of compensation mean many aren't diagnosed until adulthood.
Markus Lien, clinical psychologist · March 1, 2026
Comorbidity in ADHD and autism: Why one diagnosis is rarely the full picture →
70-80% of ADHD cases have at least one comorbid condition. Learn about the most common co-occurring diagnoses, how they mask each other, and why thorough screening matters.
Markus Lien, clinical psychologist · February 27, 2026
AuDHD: When ADHD and autism overlap →
50-70% of autistic adults also have ADHD. Learn about overlapping symptoms, differences and how assessment catches both conditions.
Markus Lien, clinical psychologist · February 25, 2026
Private vs. public ADHD assessment →
What's the difference between private and public ADHD assessment in Denmark? Compare wait times, cost, process and quality.
Markus Lien, clinical psychologist · February 22, 2026
