Parasthesias are common in alcoholics and metabolic disorders like diabetes, hypothyroidism, and hypoparathyroidism. They can also be due to peripheral vascular disease, nerve irritation, vitamin
B12 deficiency or malnutrition.
Get your blood sugar and thyroid hormones levels evaluated. You can take some vit B12 for some days and see if the symptoms are gone or not.
In case the symptoms persist then get it evaluated from a doctor. The rash can be due to liver disorder or pityriasis rosea.