Extremely blotchy around neck. White of eyes became pink. Having palpitations, shortness of breath. Cause?

hi...thanks for writing here....The above mentioned symptoms are produced by histamine ,and it is highly possible that your husband suffering from histamine intolerance.There are certain foods which contains histamine .There is some mechanism in body where histamine is broken down and it do not cause any harm,but in your case it is possible that histamine directly released in to blood and can produce symptoms,There are various foods like alcohol,cheese ,etc containing enzymes,it will be better you consult allergy specalist and get allergy testing done,you can just take anti allergic like tb.allegra 180 for relief,but main part is avoidance of foods ,you can search them in net and correlate them..