**Severe Side Effects from FTM Testosterone HRT.** Suicidal tendencies, violence, panic attacks, rage, jaundice (yellowing of the skin or eyes), severe allergic reaction (anaphalxis, difficulty breathing), nausea, vomiting, liver failure, cancer, kidney or urinary problems, infection of the injection site, stroke, or heart attack. This list is not exclusive and other severe reactions to testosterone HRT may occur. If you experience any severe side effects or suspected severe side effects from testosterone hormone replacement therapy, call your doctor or seek emergency medical treatment immediately. https://www.femaletomale.org/ftm-transitioning-guide/testosterone-hrt/testosterone-side-effects/