National Digestive Diseases Information Clearinghouse: Lactose Intolerance
NDDIC is a service of the National Institute of Diabetes and Digestive and Kidney Diseases.

National Eczema Society
From 1975 provides information and advice service to people with eczema, dermatitis and sensitive skin.

National Eczema Association for Science and Education (NEASE)
NEASE works to improve the health and the quality of life of all persons living with atopic dermatitis/eczema, providing emotional support, information, and resources to those who have the disease as well as their loved ones, while raising public awareness of the disease.

National Institute of Allergy and Infectious Diseases (NIAID)
The National Institute of Allergy and Infectious Diseases (NIAID) conducts and supports basic and applied research to better understand, treat, and ultimately prevent infectious, immunologic, and allergic diseases.

National Institute of Health - Allergy
The section on Allergy of the National Institute of Health website

National Institute of Health – Food Allergy
The section on Food AllergY of the National Institute of Health website

National Jewish Medical and Research Center
The National Jewish Medical and Research Center is known worldwide for treatment of patients with respiratory, immune and allergic disorders, and for groundbreaking medical research.

Nederland Anafylaxis Network
A Dutch non profit organization, affiliated with the Food Allergy & Anaphylaxis Alliance, whose members are specialists in experience and (para) medical and other professionals focused to the aid and support of the Dutch speaking allergic person.

NewScientist News
The Health news section of the on line New Scientist Magazine, focues on the latest science and technology news from around the world.

Newton Wellesley Hospital – Department of Pediatric Pulmonary Medicine
Children's Hospital and Health System of Wisconsin