Hemarthrosis is the medical term for bleeding in a joint. When you have pain and swelling in a single joint (monoarticular), hemarthrosis is a common cause. It is a cause for concern not only because of the pain, but because prolonged blood exposure can damage the cartilage.
Injury to the peripheral nerve (nerves outside of the brain and spinal cord) may result from blunt force, fractures, crush injuries, stretch, penetrating or cut injuries. The nerves of the upper limb are the most commonly injured. The healing process from nerve injury can take from a few weeks to a few months.
1 High blood sugar levels in people with poorly controlled diabetes damage nerves. 2  B12 or folate vitamin deficiencies can cause nerve damage and peripheral neuropathy. 3  Drugs-such as some chemotherapy medication and medicines used to treat HIV can cause damage to peripheral nerves.