For the past few days, I have been experiencing pain in my left knee without any injury. The pain mainly occurs when I bend or fold my knee. How should I manage it?

Knee pain without injury, especially while bending, is often due to strain, early cartilage wear, or patellofemoral pain. Give your knee some rest, avoid squatting and climbing stairs frequently, and apply a cold or warm compress (whichever feels better) 2-3 times daily. Gentle strengthening exercises for the thigh muscles can help once the pain reduces. You may take a mild pain reliever if suitable for you. If swelling, locking, or persistent pain continues beyond a week, consult a doctor for proper evaluation.

I am a 35-year-old man, a vegetarian, and I have never smoked, consumed alcohol, or used tobacco. During sexual intercourse, I experience pain in the frenulum of my penis, and the pain becomes more severe after the first or second insertion. What could be the cause of this issue, and how can it be treated?

Pain in the frenulum during intercourse is commonly due to a tight or short frenulum (frenulum breve), small tears from friction, or dryness. Repeated strain can make the pain worse after initial insertion. Using adequate lubrication and avoiding forceful movement may help. It is a common and treatable condition, so do not worry, but do get it checked if pain persists.

I have pain and swelling in the gums around my lower back tooth, what medicine should I take?

For immediate relief from pain and swelling, you can take over-the-counter Ibuprofen or Paracetamol, provided you have no contraindications. Rinsing your mouth with warm salt water 3-4 times a day will also help reduce inflammation and keep the area clean. However, these symptoms often indicate a localized infection, gum disease, or an erupting wisdom tooth (pericoronitis). Please do not self-prescribe antibiotics, as they will not resolve the root cause. You should schedule an appointment with a dentist promptly for a proper clinical evaluation and targeted treatment.