Now there isn't anything in terms of closing it up that can help as its been a bit too long and the chances of infection getting in are too high. However, some dressings do help to improve healing. Hydrocolloid dressings are brill as they make the environment around the wound moist which is the best for them to heal. They can be bought from pharmacies and aren't that cheap (around £5 for 5) but you can keep one on for 7 days and work well like this, much better than if they are changed regulary, and they are waterproof. Other things are keeping them covered with a dressing with a bit of anti-bacterial cream and changing the dressing everyday or so.
Also, look out for signs of infection; heat, swelling, redness, a green/yellow/smelly/ discharge, increased pain. Signs an infection has spread into your blood is fatigue, lethargy, dizziness, feeling faint and then red lines going up your arm from the wound. If these are seen get it checked by a doctor.
It does take time for wounds like this to heal and 2days is still very early, the fact that you've seen that the sides have healed is very good, just keep looking after it and it will heal.
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