Without treatment, years. Please see a doctor.
I heard that they would completely cover the payments it took to heal his head
I don't know if a broken heart ever completely heals, but I do know that, with the passing of time, the break is much less noticeable.
The erosive gas disease may take about 14 days to heal.
5,000 years
They heal 30 hp.
59
They heal 21 Hp
Herpes can take 2-3 weeks and sores may take upto 4 weeks to heal. In severe cases, it may take months to completely disappear. Antiviral medications can speed up healing.
For each person it's different; each person has a different heal rate. There's a chance it won't heal, and there's a chance it might heal within a few days. You pretty much have to experiment and try for yourself.
On Runescape a crayfish will heal you 1hp once eaten, and shrimps will heal 3hp.
It depends how bad it is, it should be gone in a couple of days or maybe week/s
In RuneScape, Anchovies only heal 1 Hitpoint.