Masking Until You Break: Why late-diagnosed ADHD high-performers crash hardest

masking

Cold-Reality : The Day The Cape [Mask] Slips

Picture the office rock‑star: inbox at zero, spotless reputation, always first with a fix. Then one Tuesday they’re staring at a blank screen, brain flat‑lined, Teams pings, triggering fight‑or‑flight. That swan is me – and thousands of late‑diagnosed ADHD pros who excel right up to the moment we don’t. The collapse isn’t laziness; it’s the invoice for years of masking.

(A 2024 UK survey found 63% of neurodivergent employees mask at work every day – keeping symptoms out of sight and mind.)

What Masking Looks Like in a High Achiever

Masking = Camouflaging ADHD traits so colleagues only see a hyper‑competent machine.

Typical tactics:
  • Olympic‑level prep to hide forgetfulness
  • Working twice the hours to land the same result. A 2023 field study calls this “double‑shift cognition”: doing the job and constant self‑monitoring
  • Weaponising adrenaline. Leaving tasks until the last safe (or not so-safe) minute, so dopamine finally shows up
  • Copy‑pasting “grown‑up” habits from neurotypical peers

Do it for 6 months and you get a promotion. Do it for a decade and you get burnout.

The Science Behind the Crash

  • Executive Dysfunction: Adults with ADHD score lower across every Executive Function (EF) domain, meaning routine tasks exact a higher cognitive toll. (Think time management, org skills, prioritising, working memory etc).
  • Emotional Dysregulation: It’s believed that clinical‑level ED affects 30-70% of ADHD adults – rocket fuel for stress.
  • Burnout risk: Some Swedish data I read shows ADHDers are 3-6 times more likely to hit occupational burnout.

Therapists call the fallout competence hangover: the exhaustion, brain‑fog and shame that follow a sprint of hyper‑performance. Think post‑marathon lactic acid – but for cognition and ADHDers.

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Picture of Phil Le Gros
Phil Le Gros

An ICF-certified coach, ex-combat-zone operator and veteran tech exec.

His lived experience of depression, anxiety & late-diagnosed ADHD fuels a mix of military-grade candour and deep empathy.