Mr Thwaites said Temazepam, which is mixed with heroin to heighten the rush, blocked peoples' veins and caused chronic skin ulcers, abscesses and gangrene.
There are a whole range of possible scenarios that can present as a lump on the skin, including, insect bites and stings, abscesses, hematomas, cysts.
The types of wounds treated included ulcers, abscesses, boils and surgical wounds.
Skin abscesses are inflammatory or non inflammatory skin disorders that occur in any age but commonly seen among teenagers.
Some of the common reasons for the need for root canal therapy include tooth decay, abscesses as a result of decay.
In late development, abdominal fistulas and abscesses can cause fever, generalized wasting and abdominal mass development.
It is characterized by pimple outbreaks, black heads, infected abscesses, cysts and even scarring.
