In girls and women, ADHD is less visible: it shows up more often as inattention, emotional difficulties and efforts to compensate than as obvious restlessness. These quiet signs are easy to miss, and diagnosis comes later on average than in boys. The UK's NICE guideline asks professionals to bear in mind that ADHD is thought to be under-recognised in girls and women.
- The figures: about two boys for every girl in the general population, but between 3 and 16 boys for every girl among children referred to clinics, depending on the country, in a European study.
- Age: in Denmark, new diagnoses peak at age 8 in boys and at 17 in girls.
- The trap: emotional signs are often taken first for anxiety or depression, which can also accompany ADHD.
How many girls and women are affected?
The gap between boys and girls depends on where you count. In the general population, a meta-analysis of parent ratings (29 studies, more than 42,000 children) and teacher ratings (24 studies, more than 56,000 children) found roughly two boys for every girl, as the World Federation of ADHD international consensus statement (2021) points out.
In clinics, the gap is much wider. In the European ADORE study (2006), which covered 1,478 children aged 6 to 18 referred in ten countries for symptoms of inattention or hyperactivity, girls made up only 15.7% of cases. In adulthood, according to a review published in 2022, the ratio of men to women comes much closer to equal.
This mismatch suggests that many girls are not referred. NICE (recommendation 1.2.2) states that they are less likely to be referred for assessment and may be more likely to have undiagnosed ADHD or to receive an incorrect diagnosis of another condition. Its committee adds, however, that it found no study directly measuring this risk. A 2020 UK expert consensus also acknowledges that nobody knows how often ADHD is missed in women. And research itself has long focused mainly on boys, the 2021 statement notes.
The signs that go unnoticed
1. Inattention rather than restlessness. In the population, the predominantly inattentive presentation is the most common, but people with the combined presentation are more likely to be referred to clinics. In a US study of 140 girls and 140 boys with ADHD seen at a clinic, girls more often had the inattentive presentation. According to the UK consensus, it often looks like a girl who is distracted, disorganised and overwhelmed, and who seems to lack motivation. Girls can also be hyperactive or impulsive, even though boys with ADHD are on average more so.
2. Emotions that overflow. Irritability, mood swings and low frustration tolerance often come with ADHD. According to the 2020 consensus, these difficulties may be more common or more intense in girls and women. A 2002 meta-analysis found more "internalising" problems (anxiety, sadness, withdrawal) in girls with ADHD than in boys, but results vary between samples. "Rejection sensitive dysphoria", widely discussed on social media, is not an established research construct: how common it is in women with ADHD is not known.
3. Efforts to compensate. Many girls and women learn to hide their difficulties: aiming for perfection, concealing their stress, avoiding certain situations. According to the 2020 consensus and the 2022 review, these strategies are among the reasons ADHD goes unnoticed. They come at a cost: in an online survey of 329 Polish women who reported an ADHD diagnosis, stronger "social camouflaging" went with lower life satisfaction and more depressive symptoms (a cross-sectional study, using camouflaging questions created for the study, which cannot prove cause).
The word "masking" comes from autism research. In a 2024 Dutch study, adults with ADHD had higher camouflaging scores (CAT-Q) than the comparison group, but lower scores than autistic adults, and it was autistic traits that predicted camouflaging. A 2026 editorial in the British Journal of Psychiatry warns against transferring this concept to ADHD without validated measures.
4. Difficulties that surface at transitions. According to the UK consensus, symptoms may become visible later in girls, often at a time of change (secondary school, higher education, work): organisational demands grow while support from family and school shrinks. Relationships can suffer too: in the ADORE study, girls were more often victims of bullying than boys.
Why diagnosis comes later
Girls seem to need to "show more" to be diagnosed. In a Swedish study of 19,804 twins rated at age 9, hyperactivity-impulsivity and conduct problems weighed more heavily in the diagnosis of girls: according to the authors, girls may be missed unless they have prominent behaviour problems. In a UK study of 283 children, parents under-rated the hyperactivity-impulsivity of girls who met ADHD criteria, and over-rated it in boys.
National registers point the same way. In Denmark, among 1.3 million children born from 1995 to 2016 (diagnoses made before age 18), new ADHD diagnoses peaked at age 8 in boys and at 17 in girls. In the Stockholm region, among 85,330 people with ADHD recorded from 2011 to 2021, women were on average 23.5 years old at their first recorded diagnosis or prescription, against 19.6 years for men: a gap of about 4 years.
Often, another explanation is explored first. In a Swedish child and adolescent psychiatry service, in the records of 50 girls and 50 boys with ADHD, girls were more often referred for emotional symptoms, were older at diagnosis, and had more often been prescribed medication other than ADHD medication beforehand. Anxiety or depression are not necessarily wrong diagnoses: they often accompany ADHD. But the 2020 consensus advises considering ADHD when anxiety or depression does not respond to treatment, and carefully distinguishing it from borderline personality disorder, which shares some features. We cover other reasons for this delay in our article on late diagnosis in women.
What about hormones?
For some women, symptoms change across the menstrual cycle: several small studies with daily tracking often found them stronger around menstruation. The idea that falling estrogen acts on dopamine rests mainly on animal research; studies in women with ADHD have not measured dopamine directly. A 2025 systematic review found only 11 studies, often small, and data on menopause remain scarce and conflicting. We go through the evidence in our article on estrogen and ADHD.
When a child's diagnosis sheds light on the mother's
Some mothers recognise themselves in the criteria after their child is diagnosed. Since ADHD is largely heritable (heritability of about 74% according to twin studies), this is not surprising, but we found no reliable statistic on how often it happens. We tell this story in our article on parents diagnosed after their children.
Do you recognise yourself? What you can do
- Write down concrete examples, from today and from your childhood: forgetting things, running late, tasks never finished, the tiredness of constantly compensating. ADHD means lasting difficulties, in several areas of life.
- Look for old traces (school reports, memories of people close to you): diagnosis relies on your developmental history and on the view of people who know you.
- Talk to your GP or family doctor, who can refer you for an assessment. For any question about treatment, talk to your doctor.
- Put words to your difficulties with the ASRS self-assessment questionnaire, developed with the World Health Organization (18 questions, about 10 minutes). It is not a diagnosis, and a low score does not rule ADHD out: in the 2005 validation study, its Part A (6 questions) picked up about 7 in 10 adults with ADHD. Note where you are in your cycle when you fill it in.
- If you think you camouflage your differences in social situations, or if autism has crossed your mind, the CAT-Q questionnaire measures camouflaging of autistic traits. It does not measure ADHD, but it can help you describe these efforts to a clinician.
Frequently asked questions
Is ADHD rarer in women?
In children, there are about two boys for every girl in the population, and many more in clinics; the gap narrows considerably in adulthood. Part of the difference is thought to come from girls being referred less often.
Can you have ADHD without being hyperactive?
Yes. The predominantly inattentive presentation is part of the official criteria, and it is the most common one in the population. It is also the least visible.
I was first told I had anxiety or depression. Was that a mistake?
Not necessarily: these conditions often accompany ADHD, and both diagnoses can be right. If anxiety or depression does not respond to treatment, or if your attention difficulties go back to childhood, talk to your doctor.
Is it too late to be diagnosed at 40 or 50?
No. NICE asks clinicians to consider ADHD at any age. Diagnosis looks for signs present since childhood, even if nobody noticed them at the time.
References: NICE (2018, updated). Attention deficit hyperactivity disorder: diagnosis and management (NG87), recommendations 1.2.2, 1.2.10, 1.3.1, 1.3.3 and 1.3.5, and rationale for recommendations 1.2.1 and 1.2.2 | Faraone SV, Banaschewski T, Coghill D et al. (2021). The World Federation of ADHD International Consensus Statement: 208 Evidence-based conclusions about the disorder. Neuroscience & Biobehavioral Reviews 128:789-818. doi:10.1016/j.neubiorev.2021.01.022 (consensus statement) | Willcutt EG (2012). The prevalence of DSM-IV attention-deficit/hyperactivity disorder: a meta-analytic review. Neurotherapeutics 9(3):490-499. doi:10.1007/s13311-012-0135-8 (meta-analysis, 86 studies of children and adolescents, 163,688 participants) | Nøvik TS, Hervas A, Ralston SJ et al. (2006). Influence of gender on attention-deficit/hyperactivity disorder in Europe - ADORE. European Child & Adolescent Psychiatry 15(Suppl 1):I15-I24. doi:10.1007/s00787-006-1003-z (observational study, 1,478 referred children, 10 countries) | Hinshaw SP, Nguyen PT, O'Grady SM, Rosenthal EA (2022). Annual Research Review: Attention-deficit/hyperactivity disorder in girls and women: underrepresentation, longitudinal processes, and key directions. Journal of Child Psychology and Psychiatry 63(4):484-496. doi:10.1111/jcpp.13480 (narrative review) | Young S, Adamo N, Ásgeirsdóttir BB et al. (2020). Females with ADHD: An expert consensus statement taking a lifespan approach providing guidance for the identification and treatment of attention-deficit/hyperactivity disorder in girls and women. BMC Psychiatry 20:404. doi:10.1186/s12888-020-02707-9 (UK expert consensus) | Biederman J, Mick E, Faraone SV et al. (2002). Influence of gender on attention deficit hyperactivity disorder in children referred to a psychiatric clinic. American Journal of Psychiatry 159(1):36-42. doi:10.1176/appi.ajp.159.1.36 (140 girls and 140 boys with ADHD, 242 controls) | Loyer Carbonneau M, Demers M, Bigras M, Guay MC (2021). Meta-Analysis of Sex Differences in ADHD Symptoms and Associated Cognitive Deficits. Journal of Attention Disorders 25(12):1640-1656. doi:10.1177/1087054720923736 (meta-analysis, studies from 1997 to 2017) | Gershon J (2002). A meta-analytic review of gender differences in ADHD. Journal of Attention Disorders 5(3):143-154. doi:10.1177/108705470200500302 (meta-analysis) | van Asselt A, Reekers D, Roke Y (2026). Rejection Sensitivity Dysphoria in Autistic Adults: A Scoping Review. Neurodiversity 4. doi:10.1177/27546330261441753 (scoping review, 12 studies) | Wicherkiewicz F, Gambin M (2026). Relations Between Social Camouflaging, Life Satisfaction, and Depression Among Polish Women with ADHD. Journal of Autism and Developmental Disorders 56(7):2875-2883 (online 29 May 2024). doi:10.1007/s10803-024-06410-6 (cross-sectional online survey, 329 women) | van der Putten WJ, Mol AJJ, Groenman AP et al. (2024). Is camouflaging unique for autism? A comparison of camouflaging between adults with autism and ADHD. Autism Research 17(4):812-823. doi:10.1002/aur.3099 (preregistered study, 105 adults per group, 477 adults with ADHD and/or autism) | Adamou M (2026). Camouflaging in ADHD: the need for construct validation before clinical adoption. British Journal of Psychiatry 229(4):366-369. doi:10.1192/bjp.2026.10577 (editorial) | Mowlem FD, Rosenqvist MA, Martin J, Lichtenstein P, Asherson P, Larsson H (2019). Sex differences in predicting ADHD clinical diagnosis and pharmacological treatment. European Child & Adolescent Psychiatry 28(4):481-489. doi:10.1007/s00787-018-1211-3 (19,804 Swedish twins linked to registers) | Mowlem F, Agnew-Blais J, Taylor E, Asherson P (2019). Do different factors influence whether girls versus boys meet ADHD diagnostic criteria? Sex differences among children with high ADHD symptoms. Psychiatry Research 272:765-773. doi:10.1016/j.psychres.2018.12.128 (283 children aged 7 to 12) | Dalsgaard S, Thorsteinsson E, Trabjerg BB et al. (2020). Incidence Rates and Cumulative Incidences of the Full Spectrum of Diagnosed Mental Disorders in Childhood and Adolescence. JAMA Psychiatry 77(2):155-164. doi:10.1001/jamapsychiatry.2019.3523 (Danish national cohort, 1.3 million children) | Skoglund C, Sundström Poromaa I, Leksell D et al. (2024). Time after time: failure to identify and support females with ADHD - a Swedish population register study. Journal of Child Psychology and Psychiatry 65(6):832-844. doi:10.1111/jcpp.13920 (register study, 85,330 people with ADHD and 426,626 controls) | Klefsjö U, Kantzer AK, Gillberg C, Billstedt E (2021). The road to diagnosis and treatment in girls and boys with ADHD - gender differences in the diagnostic process. Nordic Journal of Psychiatry 75(4):301-305. doi:10.1080/08039488.2020.1850859 (records of 50 girls and 50 boys) | Osianlis E, Thomas EHX, Jenkins LM, Gurvich C (2025). ADHD and Sex Hormones in Females: A Systematic Review. Journal of Attention Disorders 29(9):706-723. doi:10.1177/10870547251332319 (systematic review, 11 studies) | Roberts B, Eisenlohr-Moul T, Martel MM (2018). Reproductive steroids and ADHD symptoms across the menstrual cycle. Psychoneuroendocrinology 88:105-114. doi:10.1016/j.psyneuen.2017.11.015 (35-day daily tracking, 32 women) | Zaritsky R, Reed SC, Evans SM (2026). Changes in ADHD Symptoms and Mood Across the Menstrual Cycle in Females Treated With Stimulants: A Pilot Study. Journal of Attention Disorders 30(3):329-341. doi:10.1177/10870547251400038 (pilot study, 30 women) | Wynchank D, Sutrisno RMGTMF, van Andel E, Kooij JJS (2025). Menstrual Cycle-Related Hormonal Fluctuations in ADHD: Effect on Cognitive Functioning, A Narrative Review. Journal of Clinical Medicine 15(1):121. doi:10.3390/jcm15010121 (narrative review) | Jakobsdóttir Smári U, Valdimarsdottir UA, Wynchank D et al. (2025). Perimenopausal symptoms in women with and without ADHD: A population-based cohort study. European Psychiatry 68(1):e133. doi:10.1192/j.eurpsy.2025.10101 (Icelandic cohort, 5,392 women) | Chapman L, Gupta K, Hunter MS, Dommett EJ (2025). Examining the Link Between ADHD Symptoms and Menopausal Experiences. Journal of Attention Disorders 29(14):1263-1277. doi:10.1177/10870547251355006 (cross-sectional study, 656 women aged 45 to 60) | Faraone SV, Larsson H (2019). Genetics of attention deficit hyperactivity disorder. Molecular Psychiatry 24(4):562-575. doi:10.1038/s41380-018-0070-0 (review) | Kessler RC, Adler L, Ames M et al. (2005). The World Health Organization Adult ADHD Self-Report Scale (ASRS): a short screening scale for use in the general population. Psychological Medicine 35(2):245-256. doi:10.1017/S0033291704002892 (validation study, 154 participants) | Hull L, Mandy W, Lai MC et al. (2019). Development and Validation of the Camouflaging Autistic Traits Questionnaire (CAT-Q). Journal of Autism and Developmental Disorders 49(3):819-833. doi:10.1007/s10803-018-3792-6