Acute hives are actually fairly common, but finding the cause can be challenging. Hives occur when the immune system is stimulated into releasing histamine from inside the blood stream, resulting in the dilatio... continue reading  about  My wife just developed hives for the first time in her life -- on her face, arms and chest. What is known about hives, and what can she do to eliminate the symptoms?

There are two reasons that bee pollen would not be expected to help with allergies:The type of pollen that bees carry is not the kind of pollen that causes allergy. It's the wind-transported pollen that causes ... continue reading  about  Does bee pollen help reduce allergies?

The mechanism for spring and fall allergy is the same but the triggers are different. Spring allergy in Northern California is mainly caused by tree and grass pollen. (Read our article on Central Valley Allerg... continue reading  about  What are the differences between spring and fall allergies in Northern California? Are there different triggers?

This rash sounds like it can be a contact allergy if it recurs. I would worry about an infection if it seeps. Since allergic rashes and infections are treated with completely different creams or even pills, I w... continue reading  about  My daughter has had a horrible rash around her eyes and sometimes ears for the past two years. The rash is not itchy, gets really dry and seeps at times. Do you have any suggestions?

Your symptoms sound consistent with upper respiratory infection rather than allergy. The negative allergy test confirms this. These infections are treated according to symptoms. Medications can include Tylenol ... continue reading  about  For 15 years I've gotten sinus infections in spring and fall. Symptoms include sore throat, fever, nasal drainage, respiratory infection, and rash. I've been tested for allergies (negative). Do you have any idea what this is and how I can treat it?

Allergic reactions to dogs can be from anything that comes off or out of a dog. Saliva and the skin that is shed with the fur (also called dander) are the most allergenic parts of both dogs and cats. Fur/hair i... continue reading  about  I often have a light rash after playing with my dog. Are allergic reactions to dogs from their fur, their saliva or something else?

Your question is a very good one and is of global concern and research. Markedly increased mortality was first recognized during brief extremes in air pollution as long ago as 1930 in the Meuse Valley in Belgiu... continue reading  about  Living in smoggy air in Northern California has certainly made my asthma worse. Could it also be doing any damage to my heart?

One of two problems is going on here. Either you have ear wax blocking your ear canal (a condition called cerumen impaction), or your allergies won't permit your ears to "pop", meaning that your eustachian tube... continue reading  about  I have spring allergies and this year I have a plugged left ear, which I’m attributing to this. I’ve been using the over-the-counter ear wax remedies which have been working a bit for a day or two, and then my ear becomes plugged again. What can I do?

Mild intermittent asthma is defined as:One bronchodilator (Proventil) usage no more than twice a week ANDWaking up at night with asthma no more than twice a month ANDExacerbation of asthma resulting in an unsch... continue reading  about  My asthma is intermittent and mild. Is the Proventil inhaler the best treatment? Are there any side effects? Is there a more natural method to manage asthma? And are there effective dust and other airborne allergen removers?