PETROLEUM DILUTION
Petroleum is a homeopathic medicine prepared from crude rock oil, which is diluted with sulphuric acid. It is useful for all sorts of skin complaints.
 
Mind
 
Most complaints are aggravated after mental exertion
The person is very irritable, low spirited and easily offended.
The person hurries to settle affairs as he fears the death is near
He has delusions that he is double or someone else is lying near him
 
Stomach
 
Gastric complaints like chronic loose motions and action on the lining of stomach
Extreme hunger that the patient feels like eating after passing stool and sometimes have to wake up in the night and eat.
Ulceration with heart burn and sour eructation and feeling of distension
Diarrh?a only in the daytime; watery, gushing and Itching of anus. 
After cabbage; with empty feeling of stomach.
 
Skin
 
Marked skin complaints that affects the sweat and the oil glands
Skin complaints are worse in the winter season
The skin is dry, sensitive, rough and cracked, it feels like leather
Itching especially in the night, causing oozing of pus
Psoriasis with greenish crust, burning, itching, thick and the cracks are bleeding
Mostly worse in the damp weather and winter.
Itching at night
 
Dose- As prescribed by physician. Can be taken along with allopathic medicines.
 
Precautions
 
Maintain half an hour gap between food/drink/any other medicines and homeopathic medicine.
Avoid any strong smell in the mouth while taking medicine e.g. camphor, garlic, onion, coffee, hing
 
Side effects- None reported
 
Similar drugs- Carbo veg, Graphites, Sulphur, Phosphorus

Use under medical supervision.