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October 10, 2025 | Black & Kletz Allergy
Individuals with asthma probably are unaware of the association between asthma and acid reflux (GERD). It is estimated that approximately 75% of asthmatics have GERD of some degree. GERD or acid reflux occurs when there is a backflow of stomach contents into the esophagus (i.e., swallowing tube). In other words, the stomach contents travel in […]
Read MoreSeptember 26, 2025 | Black & Kletz Allergy
SARS-CoV-2 is the name of the coronavirus that is responsible for the COVID-19 pandemic that caused millions of deaths worldwide. Although vaccination and established population immunity have substantially mitigated the severity of acute SARS-CoV-2 infections, the virus continues to infect millions of people resulting in a number of hospitalizations and deaths. There is a need for an […]
Read MoreSeptember 26, 2025 | Black & Kletz Allergy
Autumn has just begun and for some people it is a bittersweet moment. Although many individuals enjoy the lower temperatures that the autumn brings in the Washington, DC, Northern Virginia, and Maryland metropolitan region, many allergy sufferers are not so welcoming because with the lower temperatures, mold and weed pollen levels rise. The major weed culprit […]
Read MoreAugust 18, 2025 | Black & Kletz Allergy
Over the last 10-15 years, the number of individuals with meat allergy has risen mainly because of a condition called alpha-gal syndrome or mammalian meat allergy. Alpha-gal syndrome was first identified by Dr. Thomas Platts-Mills at the University of Virginia School of Medicine in 2002. He discovered that the syndrome originated from the bite of lone star […]
Read MoreAugust 13, 2025 | Black & Kletz Allergy
Toxic epidermal necrolysis (TEN) is a painful, life-threatening skin condition. It is associated with blistering and peeling of large areas of the skin, including mucous membranes such as the mouth, eyes, and/or genitals. If less than 10% of the body surface is involved, it is often called Stevens- Johnson syndrome (SJS). In the more severe […]
Read MoreJuly 18, 2025 | Black & Kletz Allergy
Pet allergies are quite common in the United States. About 20% of the U.S. population have cat allergies and 10% of the people in the U.S. have dog allergies. Approximately 70% of the homes in the U.S. have at least 1 pet with dogs being the most common pet, followed by cats. The percentage of […]
Read MoreJuly 08, 2025 | Black & Kletz Allergy
Erythema Multiforme is a type of a rash on the skin, usually triggered by an infection or an adverse effect of a medication. The condition gets its name from the appearance of reddish skin lesions of various forms seen at the same time. Erythema multiforme affects less than 1% of the population. It is most […]
Read MoreJune 27, 2025 | Black & Kletz Allergy
Prurigo nodularis is a chronic inflammatory skin disease where an extremely itchy rash in the form of firm bumps called nodules appears most commonly on the arms, legs, upper back, and/or abdomen. The rash is usually symmetrically distributed on both sides of the body. The itchiness, burning, and stinging sensation associated with prurigo nodularis is […]
Read MoreJune 16, 2025 | Black & Kletz Allergy
Now that Summer is almost here, people tend to spend a lot of time outdoors. Whether it be going to the beach, swimming at the neighborhood pool, playing baseball or softball, having a picnic, fishing, hiking, riding bicycles, gardening, or any other outside activity, people are more likely to be outdoors now than in any […]
Read MoreMay 28, 2025 | Black & Kletz Allergy
Histamine is a biogenic amine (i.e., an organic compound made up of carbon and nitrogen bonds) with several biological effects across different types of cells, mediated through the activation of histamine receptors. Histamine is normally present within mast cells and other similar cell types such as basophils. Mast cells are cells of the connective tissue that contain many granules rich in histamine and other chemicals. Histamine is also present in various […]
Read MoreMay 23, 2025 | Black & Kletz Allergy
Individuals with pollen allergies may be affected throughout the year, depending on where they live or travel. In the Washington, DC, Northern Virginia, and Maryland metropolitan area, pollen allergies are bothersome to allergic individuals generally from late February through the first frost, which is usually at the end of October. In this region, trees are the […]
Read MoreApril 15, 2025 | Black & Kletz Allergy
There are a few over-the-counter (OTC) medications that some patients with asthma and other respiratory conditions occasionally use. One of them is an inhaler called Primatene Mist. Primatene Mist contains epinephrine (i.e., adrenaline) in an inhalable form. Though it is the same drug that is in an EpiPen, Auvi-Q, Adrenaclick, and other self-injectable epinephrine devices […]
Read MoreApril 10, 2025 | Black & Kletz Allergy
Pollen food allergy syndrome (PFAS), also known as oral allergy syndrome, is a condition in which there is first a “sensitization” of the immune system to various pollens and subsequent “reactions” when exposed to these pollens. Secondly, there is a similarity of the protein allergens in the pollen and the protein allergens of certain raw or […]
Read MoreMarch 25, 2025 | Black & Kletz Allergy
Spring is here! This means that quite a few Washingtonians will be pretty miserable as they will be suffering from hay fever (i.e., allergic rhinitis). In the early Spring, tree pollen is mostly to blame for the annoying symptoms that cause hay fever. Other than tree pollen, molds are also a common environmental allergen that plays havoc with allergy […]
Read MoreMarch 20, 2025 | Black & Kletz Allergy
Food protein-induced enterocolitis syndrome (FPIES) is a rare condition that causes gastrointestinal symptoms several hours after consumption of certain foods by an individual who has an intolerance to that food. The prevalence rate in the United States is approximately 0.5%. The most common types of food allergy in children and adults are mediated by an […]
Read MoreFebruary 13, 2025 | Black & Kletz Allergy
Some individuals have episodes of swelling or “angioedema” of various tissues that may occur without any known rhyme or reason. They may have 1 episode or they may have multiple or recurrent episodes. Most people with this condition are very surprised and nervous when they notice an area of their body swelling up right in […]
Read MoreFebruary 11, 2025 | Black & Kletz Allergy
Four viral infections are surging in the country this year. Three of them are respiratory viruses and one is a gastrointestinal infection. Influenza (“flu”) usually tends to peak in the Winter. The Centers for Disease Control’s (CDC) statistics reveal that more than 30% of the lab tests were positive for the flu in January of […]
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