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When to Stop / Seek Help ​

This page may save your life

Know these emergency warning signs before starting HRT. If you experience any of them, seek medical attention immediately. Do not wait.

Venous Thromboembolism (VTE) — Blood Clots ​

Deep Vein Thrombosis (DVT) — Clot in the Leg ​

SymptomNotes
Swelling in one legUsually the calf or thigh
Pain or tendernessCramping sensation, often in the calf
Redness or discolourationThe affected area may look red or darker
WarmthThe skin feels warm to the touch

What to do: Seek medical attention within 24 hours. A DVT can travel to the lungs and become life-threatening.

Pulmonary Embolism (PE) — Clot in the Lung ​

SymptomNotes
Sudden shortness of breathCan't catch your breath
Chest painSharp pain, worse when breathing deeply
Coughing up bloodEven a small amount
Rapid heart rateHeart racing or pounding
Lightheadedness/faintingFeeling like you might pass out

What to do: Call emergency services immediately. PE is life-threatening.

Stroke / Transient Ischemic Attack (TIA) ​

Symptom (FAST)What to Look For
Face droopingOne side of the face droops; uneven smile
Arm weaknessOne arm drifts downward when both raised
Speech difficultySlurred speech or trouble speaking
Time to call emergencyCall emergency services immediately

Also: sudden severe headache, sudden confusion, sudden vision loss in one eye.

SymptomNotes
Persistent headachesNew or worsening headaches over weeks/months
Vision changesBlurred or double vision
SeizuresAny type of seizure
Hearing changesRinging in ears (tinnitus) or hearing loss
Nausea/vomitingUnexplained and persistent
Personality changesMemory problems or mood changes

These symptoms develop slowly over months. If you're on CPA and have any of these, stop CPA and see a doctor for an MRI.

Severe Depression or Suicidal Thoughts ​

Get help immediately

If you have thoughts of harming yourself, call a crisis hotline or go to the nearest emergency room.

  • US: 988 (Suicide & Crisis Lifeline)
  • UK: 111 (NHS) or 999 in emergency
  • International: Find your local crisis hotline at findahelpline.com
  • Trans-specific: Trans Lifeline — translifeline.org

If CPA is causing or worsening depression, consider:

  • Stopping CPA (T may rise but it's safer than severe depression)
  • Switching to bicalutamide or spironolactone
  • Seeking mental health support

Signs of Severe Hyperkalemia (Spiro Users) ​

SymptomNotes
Muscle weaknessFeeling unusually weak or tired
Numbness/tinglingEspecially in hands, feet, or around mouth
Heart palpitationsIrregular heartbeat or fluttering
NauseaPersistent stomach upset

Hyperkalemia from spironolactone is rare in healthy people under 45, but can occur if you have kidney issues, are on interacting medications, or take potassium supplements.

Allergic Reaction ​

SymptomNotes
Rash or hivesItchy red bumps or patches
SwellingFace, lips, tongue, or throat
Difficulty breathingWheezing or tightness in chest
AnaphylaxisRare but life-threatening

When to Simply Stop HRT (Non-Emergency) ​

You can stop HRT temporarily (days to weeks) without major harm if:

  • You have a major surgery coming up (discuss with surgeon — some recommend stopping oral estrogen 2–4 weeks before)
  • You suspect your medication is counterfeit or contaminated
  • You need to preserve fertility temporarily
  • You're experiencing unmanageable side effects (mood, fatigue, etc.)

Stopping HRT is safe

Unlike some medications, stopping HRT abruptly is not dangerous. Your testosterone will gradually return to pre-HRT levels over weeks. Breast tissue and infertility are permanent, but most other changes reverse.

What NOT to Do ​

  • ❌ Don't ignore symptoms hoping they'll go away
  • ❌ Don't take aspirin to "prevent clots" without a doctor's advice
  • ❌ Don't stop all HRT without a plan (but stopping short-term is fine)
  • ❌ Don't lie to doctors about being on DIY HRT in an emergency — they need to know

Be honest with emergency providers

In an emergency, tell the doctor exactly what medications you are taking and what doses. If you are on DIY HRT, say so. They cannot help you effectively if they don't have the full picture. Patient confidentiality laws protect you.

Emergency Contact Template ​

Keep a card in your wallet with:

HRT MEDICATIONS (current):
[Medication] - [Dose] - [Frequency]
[Medication] - [Dose] - [Frequency]

BLOOD TYPE: [Your blood type]
ALLERGIES: [Any allergies]

EMERGENCY CONTACT: [Name] - [Phone number]

MEDICAL CONDITIONS: [Any relevant conditions]

References ​

  1. Connelly PJ, et al. (2021). Managing the risk of venous thromboembolism in transgender adults undergoing hormone therapy. PMC. https://pmc.ncbi.nlm.nih.gov/articles/PMC6628137/

  2. American Stroke Association. FAST Signs of Stroke. https://www.stroke.org/en/about-stroke/stroke-symptoms

  3. Weill A, et al. (2021). Use of high-dose cyproterone acetate and risk of intracranial meningioma. BMJ. https://www.bmj.com/content/372/bmj.n37