If you hit your head, watch out for these symptoms that can show up even days later

A head injury doesn’t need visible signs to be serious. When the brain is jolted, symptoms may appear later—headache, dizziness, nausea, or sensitivity to light and noise. Over time, you might notice slow thinking, memory issues, fatigue, mood changes, or sleep problems.

These aren’t minor reactions—they’re warning signs. Resting and seeking medical advice early can speed recovery and prevent long-term damage. Even a small head impact should never be ignored.