A continuous headache for 5 days could be due to stress, dehydration, eye strain, or an underlying condition. Rest, drink plenty of water, and try paracetamol for relief, but consult a doctor as headaches lasting this long need proper treatment.

Left-side knee pain from cartilage damage can improve with rest, ice, and avoiding heavy weight on the leg. Physiotherapy to strengthen the muscles around the knee can also help reduce limping. Consult an orthopaedic doctor if the pain continues or worsens.

Applying warm compresses, gentle stretching, and maintaining good posture can help relieve the pain. Over-the-counter pain relievers may provide relief, but consult a doctor if the discomfort persists.

Viral infections, dehydration, or low energy levels could cause body pain, headache, and weakness. It is important to consult a doctor to determine the exact cause and receive proper treatment.

Throat pain can be relieved with pain relievers, lozenges, or warm saltwater gargles. Consult a doctor to choose the right medicine based on the cause of the pain.

Cold, fever, and body pain are often caused by viral infections, such as the flu or a common cold. Resting, staying hydrated, and taking fever-reducing medicines can help relieve symptoms. Consult a doctor if the fever is high, symptoms last more than a few days, or if you have any underlying health conditions.