What should you know about constant headache and stiff neck?

Neck muscle tension, prolonged screen use, poor sleep, dehydration, or a viral illness can cause headache and reduced neck comfort. Sinus inflammation may add pressure around the forehead or face; see [Chronic Sinusitis](/conditions/chronic-sinusitis/) for related symptoms. A stiff neck can also be a sign of a serious infection around the brain and spinal cord, especially when fever, light sensitivity, confusion, or repeated vomiting is present. The symptom combination cannot identify its cause by itself.

Stop strenuous activity and rest in a quiet room. Sip fluids if you can swallow normally, avoid alcohol, and use a comfortable neutral neck position. Do not forcefully stretch or manipulate the neck. Record when the headache began, where it hurts, what makes it worse, and any fever, illness, injury, or new medicine. Arrange a same-day clinical assessment if the pain remains constant or the stiffness is new.

Seek emergency care now for a sudden explosive headache, inability to bend the neck, fainting, seizure, confusion, new weakness or numbness, trouble speaking, vision loss, repeated vomiting, a non-blanching rash, or fever with marked illness. Get prompt advice after a head or neck injury, or if you have a weakened immune system. Do not drive yourself if you feel confused, faint, or unsafe.

Ask whether the pattern fits muscle tension, infection, migraine, or another cause; which examination findings matter; whether you need testing; and which pain medicines are suitable for you. Mention any recent travel, insect exposure, respiratory illness, or heat exposure, as these can change the assessment. Related topics include [Dengue Fever](/conditions/dengue-fever/) and [Heat Exhaustion](/conditions/heat-exhaustion/).