What causes headache and body weakness?

　　In general, headaches accompanied by body weakness may be caused by excessive fatigue, lack of sleep, dehydration, iron deficiency anemia, migraine, and other factors. These conditions require symptomatic treatment through general therapy, medications, and other methods. If discomfort occurs, it is recommended to seek timely medical attention and undergo appropriate treatment under a doctor's guidance. A detailed explanation is as follows:

　　1. Excessive Fatigue

　　Prolonged engagement in heavy physical labor or strenuous exercise can lead to excessive energy consumption, leaving muscles and the nervous system in a highly tense state without sufficient rest and recovery. This may cause headaches and body weakness, possibly accompanied by fatigue, difficulty concentrating, and memory decline. It is recommended to get adequate rest and arrange work and rest time reasonably.

　　2. Lack of Sleep

　　Long-term late nights or excessive mental stress can slow down brain and body metabolism and impair blood circulation, leading to headaches and body weakness. Symptoms may also include mental depression, difficulty concentrating, and mood swings. It is recommended to maintain a regular schedule, try to go to bed and wake up at the same time each day, and ensure 7 to 9 hours of high-quality sleep every night.

　　3. Dehydration

　　When water intake is insufficient or excessive fluid loss occurs, dehydration may result. Dehydration affects blood viscosity, reduces blood volume, impairs circulation, and causes oxygen deficiency in the brain and other body parts, leading to headaches and physical fatigue. It may also be accompanied by symptoms such as thirst, dark urine, and dizziness. It is recommended to replenish fluids promptly, avoid prolonged exposure to high temperatures, reduce perspiration, and prevent dehydration.

　　4. Iron Deficiency Anemia

　　Long-term picky eating or dietary imbalances may trigger iron deficiency anemia. Iron is a crucial component for hemoglobin production; its deficiency leads to inadequate red blood cell production and reduced oxygen transport capacity in the blood, causing insufficient oxygen supply to the brain and other body parts, resulting in headaches and physical fatigue. Additional symptoms may include pale complexion, palpitations, and shortness of breath. It is recommended to follow medical advice to use medications such as compound ferrous sulfate granules, iron dextran tablets, and iron sucrose injection for treatment.

　　5. Migraine

　　Migraines may be related to various factors such as endocrine changes, diet, and environmental influences. During a migraine attack, blood vessels in the brain expand and contract, causing pain. Changes in neurotransmitters may also lead to a feeling of general weakness, and symptoms such as nausea, vomiting, light sensitivity, and sound sensitivity may also occur. It is recommended to follow medical instructions to use medications such as ibuprofen tablets, indomethacin tablets, and nimodipine tablets to relieve symptoms.

　　If headaches and body weakness occur, applying a warm towel to the forehead or neck may help relax muscles and alleviate headache symptoms.