Feeling cold and headache: what it can mean

Feeling cold with a headache is often linked to illness, dehydration or stress, but warning signs require prompt care. The cold feeling may be shivering, a cool environment, or a change in how your body regulates temperature.

A common cold, influenza or COVID-19 may present with headache, tiredness, throat irritation, cough or body aches. Allergic rhinitis and chronic sinusitis can cause pressure around the nose or face, blocked nasal passages and headache. Dehydration may cause thirst, dark urine, dizziness or a dry mouth. Heat exhaustion can produce headache, weakness, nausea and clammy skin even when you feel chilled afterward. Anxiety can cause muscle tension, rapid breathing and alternating hot or cold sensations. A symptom pair cannot confirm one diagnosis.

Rest somewhere comfortable, drink fluids gradually and eat if you have not had a meal. Check your temperature and note the headache’s location, onset and severity. Reduce bright light and screens if they worsen discomfort. Use only medicines suitable for you and follow the label; ask a pharmacist if you have kidney disease, stomach problems, are pregnant, or take regular medicines. Arrange review if the headache keeps returning, lasts longer than expected, or follows heat exposure.

Seek emergency care for a sudden, extreme headache, confusion, fainting, weakness on one side, trouble speaking, a seizure, severe breathing difficulty, or a stiff neck with rash. Prompt assessment is also needed for repeated vomiting, inability to keep fluids down, severe dehydration symptoms, or worsening illness after heat exposure. Do not drive yourself if you feel faint or confused.

Could this fit a viral infection, sinus problem, dehydration or heat exhaustion? Which pain relievers are safe with my health conditions? What changes in the headache should trigger urgent review?