Why do I get angry over small things?

Anger at small things - the misplaced keys, the slow driver, the dishwasher loaded wrong - is almost never about the thing: it is a full system overflowing at the first new drop. The common causes: sleep debt, which measurably shrinks frustration tolerance; chronic stress, where the threat system stays idling high and anything trips it; hormones - premenstrual days, perimenopause, postpartum, and low testosterone all raise irritability; caffeine and blood sugar swings through the day; and depression and anxiety, which wear irritability as a disguise more often than people expect - NIMH lists irritability among depression's symptoms, and for many people, especially men, snapping is how low mood first shows. Reading the fuse: track the week - if snapping follows short nights, the fix is sleep; if it peaks premenstrually and lifts with the period, it is hormonal; if it comes with worry and tension, anxiety; if it arrives with flatness, lost interest, and exhaustion, depression; if it is new and constant, the physical checks - thyroid, blood sugar - are worth a mention at a provider visit. Short-fuse management: the pause works - ten slow breaths or leaving the room before responding, because the surge chemistry peaks and fades in about ninety seconds if you do not feed it. Regular food, caffeine awareness, movement, and sleep repair rebuild the buffer. When anger is damaging relationships or scaring you, that is therapy territory - anger management and CBT genuinely work. Pymander is a free AI doctor, 24/7 by text. Describe the pattern, and it can help you read the fuse.