Dermatographia?

CanadaJim

Member
Just curious, has anyone ever experienced what is called dermatographia while taking testosterone injections? I was injecting test-e subq (80-100mg weekly) for the last five months or so and have developed an interesting skin reaction. Basically I can take a retracted ball point pen and write my name on my arm or wherever and it will appear in hive form and last for at least 30 minutes or so. Cool party trick but a little concerning. I have never had an issue with allergies. Initially it was extremely itchy but not anymore. I haven't had any injections for nearly a month (no pct) but the issue is still there. Anyway just wondering if anyone else experienced anything similar.
 

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TRT Hormone Predictor Widget

TRT Hormone Predictor

Predict estradiol, DHT, and free testosterone levels based on total testosterone

⚠️ Medical Disclaimer

This tool provides predictions based on statistical models and should NOT replace professional medical advice. Always consult with your healthcare provider before making any changes to your TRT protocol.

ℹ️ Input Parameters

Normal range: 300-1000 ng/dL

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Understanding Your Hormones

Estradiol (E2)

A form of estrogen produced from testosterone. Important for bone health, mood, and libido. Too high can cause side effects; too low can affect well-being.

DHT

Dihydrotestosterone is a potent androgen derived from testosterone. Affects hair growth, prostate health, and masculinization effects.

Free Testosterone

The biologically active form of testosterone not bound to proteins. Directly available for cellular uptake and biological effects.

Scientific Reference

Lakshman KM, Kaplan B, Travison TG, Basaria S, Knapp PE, Singh AB, LaValley MP, Mazer NA, Bhasin S. The effects of injected testosterone dose and age on the conversion of testosterone to estradiol and dihydrotestosterone in young and older men. J Clin Endocrinol Metab. 2010 Aug;95(8):3955-64.

DOI: 10.1210/jc.2010-0102 | PMID: 20534765 | PMCID: PMC2913038

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