It can happen with products similar to shaving lotion, sunscreen and some perfumes. Eczema, also called atopic dermatitis, affects  between 10 and 20 percent of children and 1 to 3 % of adults. A widespread symptom of eczema is dry, purple, irritated and itchy pores and skin.
Common infections which are sexually transmitted in men embody gonorrhea, chlamydia, syphilis, hepatitis C and B, genital warts, human papillomavirus , and genital herpes. STDs are recognized with tests that identify proteins or genetic material of the organisms causing the infection. The prognosis of an STD is dependent upon whether or not the infection is treatable or not.
The best approach to forestall contact dermatitis is to keep away from contact with the allergens or irritants that trigger your symptoms. If you can successfully avoid the irritants or allergens that set off your symptoms, your pores and skin will finally clear up. See a GP  when you have persistent, recurrent or severe signs of contact dermatitis.
With components that enhance skin health and reduce the inflammatory response, these diets can cut back itching in allergic pets. These diets are usually available from your veterinarian. The term atopic dermatitis in the dog is usually used as a synonym for atopy. The primary allergens are tree pollens (cedar, ash, oak, and so forth.), grass pollens, weed pollens , molds, mildew, and home mud mites. Many of these allergic reactions occur seasonally, similar to ragweed, cedar, and grass pollens.
A contact allergy is the least widespread sort of allergy in dogs. It results from direct contact with allergens, such as pyrethrins, present in flea collars, pesticides, grasses, and materials, such as wool or synthetics, utilized in carpets or bedding. Contact allergies can become practically something and at any age.