Though we may have had chickenpox as a child, this virus lives in the nervous system and is never fully cleared from the body.
Shingles - Herpes Zoster - (a skin rash) is a reactivation of this virus. Under certain circumstances: such as emotional, immune deficiency or stress may be a cause. In most cases, a cause for the reactivation of the virus is never found.
May we also suggest:
Aloe Vera & Seaweed Gel to ease the heat.
Melissa Hydrosol for calming.