Very common. A computer tension headache is that band-like ache across your forehead or the back of your head after hours at a screen, driven by a stack of stressors: glare and brightness making you squint, eye strain, and a hunched posture that tightens your neck and shoulders.
The fixes target all of those: match screen brightness to the room, cut glare, raise your screen to eye level and sit back, use the 20-20-20 rule, hydrate, and take movement breaks. If headaches are frequent or severe, see a doctor, and get an eye exam, since an outdated prescription is a common hidden trigger.
