What causes feeling cold and dizzy without having a cold, and what should be done?

Feeling cold and dizzy without having a cold may be caused by insufficient warmth, excessive fatigue, hypoglycemia, anemia, or hypothyroidism. Symptoms can be improved through timely warming measures, adequate rest, energy supplementation, or medication. If symptoms persist or are accompanied by palpitations and worsening weakness, prompt medical attention is necessary.

1. Insufficient warmth: When the ambient temperature is too low or clothing is inadequate, body heat is lost rapidly, causing blood vessel constriction and reduced cerebral blood supply, leading to chills and dizziness. It is recommended to immediately add more clothing, move to a warmer environment, and drink warm beverages to restore body heat.

2. Excessive fatigue: Long-term sleep deprivation and overexertion reduce bodily functions, impair oxygen supply to the brain, and lower immunity, resulting in chills and dizziness. It is advised to stop activities, get sufficient rest, ensure adequate sleep, and avoid overstraining the body.

3. Hypoglycemia: Skipping meals or eating too little leads to low blood sugar levels, depriving the brain of energy and causing chills and dizziness, possibly accompanied by palpitations and fatigue. It is recommended to promptly consume sugar-containing foods such as candy or bread, and maintain regular meal times to avoid fasting.

4. Anemia: Reduced hemoglobin impairs the blood's oxygen-carrying capacity, leading to cerebral hypoxia and dizziness. Decreased body heat production causes chills, often accompanied by pallor and fatigue. Patients may take medications such as ferrous sulfate oral solution, ferrous succinate tablets, and vitamin C tablets under medical guidance to alleviate symptoms.

5. Hypothyroidism: Insufficient thyroid hormone secretion slows metabolism, reducing heat production and affecting cerebral blood flow, resulting in chills and dizziness, along with memory decline and limb edema. It is recommended to take medications such as levothyroxine sodium tablets, thyroid tablets, and oryzanol tablets under medical supervision to relieve discomfort.

Daily precautions include adjusting clothing according to temperature changes, maintaining regular sleep patterns and a balanced diet, engaging in moderate exercise such as walking or jogging to strengthen physical health, and regularly monitoring physical condition to minimize discomfort.