Foods to Avoid With Fever Blisters
Fever blisters, also known as cold sores, generally affect the skin outside your mouth -- lips, chin and cheeks -- although they may also occur on the roof of your mouth or on your gums. Your physician may recommend medications to help heal these sores or to prevent outbreaks, which are caused by the herpes virus, but there are foods you should avoid as well.
Salty Foods
When a fever blister attack occurs, avoid consuming foods high in salt. Salty foods, such as pretzels or soy sauce, may aggravate irritated sores. Additionally, too much sodium in your diet -- a component of salt -- can throw off the balance of moisture in your body; correct moisture levels play an important role in the healing of fever blisters and other wounds. Keep your sodium levels to 1,500 milligrams or less each day. Some home remedies call for finely ground salt to be directly applied to fever blisters as a way of drying wounds, but no scientific evidence suggests this is effective for healing.
- When a fever blister attack occurs, avoid consuming foods high in salt.
- Additionally, too much sodium in your diet -- a component of salt -- can throw off the balance of moisture in your body; correct moisture levels play an important role in the healing of fever blisters and other wounds.
Spicy Foods
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Some people find that eating spicy foods triggers an outbreak of fever blisters; other people find that spicy foods irritate the skin and cause additional pain in the cold sore area rather than cause the outbreak in the first place. Whatever the case is for you, it is a smart idea to avoid consuming spicy foods. This can apply to foods that are hot to the taste, such as hot wings, jalapeno peppers or hot pepper sauce, or only pungent, such as curries or foods that contain a large quantity of paprika.
Foods Containing Arginine
Arginine, an amino acid, triggers outbreaks of fever blisters, particularly when you have a low quantity of lysine, another amino acid, in your meal plan. Avoid foods such as chocolate, soy beans, garbanzo beans and cereals, which are rich in arginine. Protein-rich foods such as poultry, nuts, seafood, pork and beef also contain high quantities of this amino acid.
Foods With Rough Textures
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An important key to fever blister healing is to keep the sores clean and dry while allowing them to heal 1. Eating foods with rough textures may disturb the blisters and irritate them, postponing the process of wound healing. Do not consume potato chips, crunchy cereal, hard pretzels and crusty breads as they all have abrasive textures that can pop blisters and scratch healing sores.
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References
- Federal Citizen Information Center: Fever Blisters and Canker Sores; National Institute of Dental and Craniofacial Research
- MedlinePlus; Mouth Sores; November 2010
- Wound Essentials: The Role of Nutrition in Tissue Viability; E. Johnston; 2007
- American Heart Association: Reducing Sodium in a Salty World
- Disabled World: How to Heal a Cold Sore Quickly; J. Tylee; March 2009
- Ramchandani M, Kong M, Tronstein E, et al. Herpes Simplex Virus Type 1 Shedding in Tears and Nasal and Oral Mucosa of Healthy Adults. Sex Transm Dis. 2016;43(12):756-760. doi:10.1097/OLQ.0000000000000522
- Institute for Quality and Efficiency in Health Care (IQWiG). Cold sores: Overview. 2018.
- Montgomery-cranny JA, Wallace A, Rogers HJ, Hughes SC, Hegarty AM, Zaitoun H. Management of recurrent aphthous stomatitis in children. Dent Update. 2015;42(6):564-6, 569-72. doi:10.12968/denu.2015.42.6.564
- Krissel JD, Bhatia A, and Thomas A. Cold sore susceptibility gene-1 genotypes affect the expression of herpes labialis in unrelated human subjects. Hum Genome Var. 2014; 1: 14024. doi:10.1038/hgv.2014.24
- Fatahzadeh M and Schwartz RA. Human herpes simplex virus infections: Epidemiology, pathogenesis, symptomatology, diagnosis, and management. J Am Acad Dermatol. 2007;57(5):737-63. doi:10.1016/j.jaad.2007.06.027
- Formica M, Kabbara K, Clark R, Mcalindon T. Can clinical trials requiring frequent participant contact be conducted over the Internet? Results from an online randomized controlled trial evaluating a topical ointment for herpes labialis. J Med Internet Res. 2004;6(1):e6.
- American Academy of Dermatologists. Cold sores: Overview.
- American Academy of Dermatologists. Cold sores: Signs and symptoms.
- American Academy of Dermatologists. Cold sores: Tips for managing.
Writer Bio
Nicki Wolf has been writing health and human interest articles since 1986. Her work has been published at various cooking and nutrition websites. Wolf has an extensive background in medical/nutrition writing and online content development in the nonprofit arena. She graduated with a Bachelor of Arts in English from Temple University.