A sudden allergy to a common substance raises this flag:
*Skin – dryness, dry red patches, acne, pimples, hives, rashes, itching skin, eczema, psoriasis, seborrhoea, ringworm, contact dermatitis, rosacea, etc.
* Allergies, sensitivities and intolerances that worsen in damp, muggy or moldy places or weather that is damp, muggy, humid or rainy.