Pale, clammy skin, sweating and nausea

Nausea with sweating may occur during food poisoning, gastroenteritis, gastritis, acid reflux, or gallstones. Heat exhaustion can cause heavy sweating, weakness, headache, dizziness, and nausea. Hypoglycaemia can cause sweating, trembling, hunger, irritability, or confusion, particularly in someone using diabetes medicine. Hepatitis A may cause nausea with loss of appetite, tiredness, abdominal discomfort, dark urine, or yellowing of the skin and eyes. The combination is not specific enough to diagnose a condition without timing, examination, and context.

Sit or lie somewhere safe, loosen tight clothing, and avoid driving while dizzy or unwell. Move to a cool place after heat exposure and take small sips of fluid if you can swallow normally. If low blood sugar is possible and you are awake, follow your diabetes plan for fast-acting carbohydrate. Do not give food or drink to someone confused, faint, or unable to swallow. Note pain location, fever, vomiting, recent meals, medicines, and heat exposure for the clinician.

Call emergency services for chest pressure or pain, severe breathlessness, fainting, confusion, new weakness, blue or grey lips, severe abdominal pain, blood in vomit or stool, or skin that remains cold and clammy. Seek urgent care when vomiting prevents fluids, symptoms follow heat exposure and do not improve with cooling, or low blood sugar does not respond to the agreed treatment plan.

Ask which cause best fits the timing and triggers, whether glucose or other tests are needed, how to prevent recurrence, and which warning signs should send you to emergency care. Mention pregnancy possibility, diabetes, recent travel, new medicines, and anyone else who became ill after the same meal.