Milk allergy
From Wikipedia, the free encyclopedia
Milk allergy is as an immunologically mediated adverse reaction to one or more cow's milk proteins.
In some children the ingestion of cow's milk can trigger the body into launching an inappropriate immune response to the proteins in milk resulting in an allergic reaction.
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[edit] Symptoms
The principle symptoms are gastrointestinal, dermatological and respiratory. These can translate to: skin rash, hives, wheezing, vomiting, diarrhea, constipation and distress. The clinical spectrum extends to diverse disorders: anaphylactic reactions, atopic dermatitis, wheeze, infantile colic, gastroesophageal reflux (GER), oesophagitis, allergic colitis and constipation.
The symptoms may occur within a few minutes after exposure in immediate reactions, or after hours (and in some cases after several days) in delayed reactions.
[edit] Difference with lactose intolerance
Milk allergy is a food allergy, an adverse immune reaction to a food protein that is normally harmless to the non-allergic individual. Lactose intolerance is a non-allergic food hypersensitivity: it is due to the deficiency of the enzyme lactase, which is required to digest the predominant sugar in milk.
[edit] Treatment
Currently the only treatment for milk allergies is total avoidance of milk proteins. Initially if the infants are breastfed, the lactating mothers are given an elimination diet. If symptoms are not relieved or if the infants are formula-fed, milk substitute formulas are used to provide the infant with a complete source of nutrition. Milk substitutes include soy milk and hypoallergenic formulas based on hydrolysed protein or free amino acids.
Rice milk is also sometimes used as a milk substitute by older children and adults, but is not suitable nutrition for infants.
[edit] Statistics
Milk allergy is the most common food allergy. It affects somewhere between 2% and 3% of infants in developed countries, but approximately 85-90% of children lose clinical reactivity to milk once they surpass 3 years of age.[1]
Between 13% and 20% of children allergic to milk are also allergic to beef.[2]
[edit] Reference
- ^ Host A. Frequency of cow's milk allergy in childhood. Ann Allergy Asthma Immunol 2002;89(6 Suppl 1):33-7. PMID 12487202.
- ^ Mrtelli, A, A. De Chiara et al (2002). "Beef allergy in children with cow's milk allergy; cow's milk allergy in children with beef allergy." Ann Allergy Asthma Immunol. 2002 Dec;89(6 Suppl 1):38-43. http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12487203&dopt=Abstract
