 [ Symptoms ] small thrombus in distal right pulmonary artery should i start taking xarelto rivaroxaban [ Disease ] hi… let us know that allergy and developing allergy is of no specific age or substance your body can develop allergies to any substance at any time of your life… so what you are describing is a type of allergycontact dermatitis… so try not to use this substances whether they are metal or whatever for some time and notice what exactly causes your allergy… take an antihistamine as well and try washing the area thoroughly with no soaps or detergents … just water… regards