Pressure in the head when bending over: causes, red flags and when to get it checked

Bending forward raises the pressure in the veins of the head and face. If the sinuses are inflamed or the pressure inside the skull is already raised, that extra push becomes noticeable as fullness or an ache. Context makes the difference: a blocked nose and a recent cold point to the sinuses, while morning headaches and visual symptoms point elsewhere.

• Sinus congestion or sinusitis: pressure behind the cheeks and forehead, a blocked or runny nose, and a recent cold. Settles over days to a couple of weeks.

• Allergic rhinitis and hay fever: blocked nose, sneezing and itchy eyes with fullness in the face that varies with pollen and dust exposure.

• Tension-type headache and neck stiffness, where bending exaggerates a dull ache.

• Migraine, which is frequently mistaken for sinus disease; bending can worsen the throb.

• Ear pressure from a blocked eustachian tube, often with muffled hearing.

• Idiopathic intracranial hypertension: raised cerebrospinal fluid pressure, most often in younger women with a higher body weight, causing daily headaches, pulsatile tinnitus and visual obscurations.

• Rarely, a mass, blocked fluid pathway or venous clot raising intracranial pressure.

Daily headache that is worse on waking, vomiting, transient greying of vision on standing or bending, double vision, a pulsing whoosh in the ears in time with the heartbeat, or new weakness, confusion or seizures warrant assessment.

• Call 999: sudden severe headache, collapse, seizure, or new weakness or speech difficulty.

• Same-day assessment (NHS 111 or an urgent eye service): any sudden loss or blurring of vision, or double vision with headache.

• See a GP within days: headaches that are worsening over weeks, wake you, or come with vomiting.

• Routine GP: a week or two of face fullness after a cold that is slowly improving, or recurrent congestion.

Questions will cover duration, whether bending, coughing or straining worsens it, associated nasal symptoms, visual disturbances, tinnitus, changes in weight, medicines (some antibiotics, retinoids and steroids are linked to raised pressure) and sleep. Examination typically includes tapping over the sinuses, looking in the nose and ears, testing vision and visual fields, and examining the back of the eye for optic disc swelling.

• Eye examination with visual fields and optic nerve imaging: the key test for raised intracranial pressure.

• MRI brain with venography: to look for a mass or venous clot before a lumbar puncture.

• Lumbar puncture with pressure measurement: confirms raised pressure and can relieve it temporarily.

• Nasal endoscopy or sinus CT: only for persistent, clearly sinus-type problems.

For a sinus-type cause, saline nasal rinses, steam, simple pain relief and time are the usual advice, and antibiotics are rarely needed. A nasal steroid spray prescribed or bought over the counter can help allergy-driven congestion. Avoid regular painkiller use because of rebound headache.

NHS care starts with a GP, who can refer to ENT, ophthalmology or neurology. Privately, an ENT or neurology consultation and imaging can be arranged directly, but eye-pressure checks by an optometrist are a low-cost first step either way.