A knee that has twisted and is painful while standing is most often due to a soft-tissue injury, such as a ligament strain or a knee sprain, and the first step is simple care: rest the knee, avoid putting too much weight on it, apply ice for 10-15 minutes several times a day, keep the leg elevated, and use a compression bandage if comfortable. You can take a mild pain reliever if needed. Do not try heavy activity or force movement until the pain improves. If the pain is severe, swelling increases, you cannot bear weight, or it does not improve within a few days, consult a doctor as you may need an examination or imaging to rule out ligament or cartilage injury.

Mild pain on one side of the scrotum can be due to several common causes, such as minor strain or injury, inflammation or infection like epididymitis, fluid collection (hydrocele), or a small swelling of veins (varicocele), and sometimes it may even be temporary without a clear cause. Usually, rest, wearing supportive underwear, and avoiding heavy activity can help if the pain is mild and recent. However, it is important to monitor your symptoms and seek medical care promptly if the pain becomes severe or sudden, if there is swelling, redness, fever, a lump, or nausea/vomiting, as this could indicate a more serious condition, such as testicular torsion, which requires urgent treatment. If the discomfort persists for a few days, a doctor's examination (and possibly an ultrasound) is recommended to confirm the cause.

Ankle pain that occurs only while walking or running is commonly due to strain of the muscles or ligaments, overuse, improper footwear, or conditions like an ankle sprain or tendon inflammation, especially if there was a twist or increased activity. Initial treatment includes rest, avoiding activities that worsen the pain, applying ice packs for 10-15 minutes a few times a day, keeping the foot elevated, and using supportive footwear; gentle stretching and strengthening exercises can help once the pain reduces. If the pain persists for more than a few days, worsens, or is associated with swelling or difficulty bearing weight, it is important to consult a doctor for proper evaluation and possible imaging.