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Dr. Joshua Davidson

Allergy and Immunology
CA
19 years experience male

Locations

Office

My office hours

Wednesday: 8:00am - 5:00pm
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Insurances accepted

Aetna

Aetna Life Insurance Company

About

Bio

I'm originally from New York and grew up in Los Angeles. After attending Brandeis University in Boston for my undergraduate education, and Yale University for a graduate public health degree, I obtained my MD at UCLA. From there I completed a pediatric residency and a fellowship at National Jewish Health in Allergy/Immunology -- the #1 respiratory hospital in the United States. I'm here to help and am looking forward to it.

Specialties
Doctors may have more than one area of specialty interest. Board certification in a specialty area means the doctor has completed formal training and has practice experience in that specialty, and has passed the certification examination from the corresponding accredited medical specialty board.

Allergy and Immunology

Licenses

United States: California

Doctor Q&A

107 Answers
8 Agrees
The number of answers this doctor has agreed with.
A 28-year-old male asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Sinus infection: The head pain and dizziness suggest more than a typical upper respiratory infection. The post nasal drip could be draining from the sinuses as well. Y... Read More
A 26-year-old female asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Sensitivity: Alcohol is a typical cause for non-allergic symptoms, and that could explain the nasal congestion you're experiencing. The other symptoms are troublin... Read More
A 40-year-old female asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Likely not: Aerd raises the ante so to speak. Those patients have the added concern of respiratory distress that other patients may not experience despite a NSAID... Read More
A 20-year-old female asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Unclear: I think I can see what you're asking in regard to IgA and transplant medicine. However, I'd like to make sure. If you're worried about IgA nephropathy... Read More
A 37-year-old male asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Ignore: Many symptoms can be treated with moisture alone. A 10-15 minute warm shower goes a long way!
A 59-year-old male asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Generally not: It is generally not considered contagious, as it is typically a fungal infection of the glans penis -- usually an issue with poor hygiene in an uncirc... Read More
A 50-year-old male asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Unfortunately not. : While it can lead to sedation, typically it is not a first line option for vertigo. Ultimately it depends on the cause of the vertigo. Occasionally an... Read More
A 27-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Most, but not all: People who have allergies to tree or grass pollens typically have trouble in the early spring. Those with allergies to weed pollens or mold spores hav... Read More
A 55-year-old male asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Healthy fat is best: Technically any fats will improve absorption of Ribavirin and limit systemic side effects like nausea. Common sense rules apply to these fats, as they... Read More
A 40-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Absolutely: Asthma and COPD are technically two separate processes, though more research is showing similarities between the two. Both conditions are considered "... Read More
A 30-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Get help!: It's probably not the books themselves, but the dust they carry. House dust is typically a combination of dust mites, pet dander (if pets are in the h... Read More
A 53-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
A lot: There are guidelines for total radiation exposure associated with commercial flights. A typical airplane flight will expose a person to roughly 1 mill... Read More
A 39-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Symptoms and testing: There is a lung function test called spirometry that may be performed by an allergist or pulmonologist in an office setting. It involves breathing int... Read More
A member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Possibly: A negative spinal tap is usually a good sign in terms of ruling out ms, but it's not the only sign, and it depends on the tests performed on the spina... Read More
A 20-year-old male asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Slightly higher: I would actually say your chances are slightly higher with a concurrent history of asthma. It is well known that gerd can trigger asthma symptoms, so ... Read More
A 20-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Sunlight: Hi there, i'm assuming if you've "tried everything, " that would include most topical and systemic medications. One of the best treatments for plaque... Read More
A 27-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
There are a few: Anaphylaxis is the term given to a systemic hypersensitivity reaction. It's where the body's immune system identifies a "harmful" substance and genera... Read More
A 33-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
It depends...: ...On the tick. Deer ticks, for example, are often the carriers of the bacteria associated with lyme disease, a chronic and potentially debilitating c... Read More
A 34-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Yes: Technically yes, but people who have an allergy to a tick bite are likely sensitive to any bites, i.e. Mosquito, sand fly, etc. Topical anti-inflammat... Read More
A 40-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
An old connection: Many years ago, before modern allergies were even diagnosed, physicians and scientists realized that exposure to hay caused typical allergy symptoms f... Read More
A 25-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Absolutely: For many patients there is a direct connection between activity in the upper airway (nose/throat) and lower airway (lungs). That is, when inflammation... Read More
A 27-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Yes: It is quite normal, especially if a person experiences swelling as part of their reaction.
A 30-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Not usually: It can be a sign of asthma, which is characterized by bronchospasm, or the tightening of muscles around the airways. When a person coughs or laughs to... Read More
A 24-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
No: But, you can be allergic to a dye that is used in the preparation of a given vitamin.
A 46-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Yes!: Singulair (montelukast) is one of many options for allergy treatment. Singulair (montelukast) is known as a leukotriene receptor antagonist. I know, n... Read More
A 20-year-old female asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Highly unlikely: At your age that's highly unlikely, but bronchitis and/or asthma could definitely be playing a role. The fact that Advair helped is a big clue, as tha... Read More
A 36-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Cetirizine? It can.: Yes, in some cases Zyrtec, or cetirizine as a generic, can help with bug bites. Sometimes it's not quite enough, however, and stronger antihistamines ... Read More
A 34-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Two ways: Typically there are two ways to check: allergy skin testing through an allergist's office, or via blood work that may be obtained by visiting any phys... Read More
A 34-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Yes!: A typical apple will contain about 5g of fiber. Considering they are inexpensive, require no preparation, and taste really good, i'd say apples are an... Read More
A 22-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
It depends...: ...On the type of the cancer, the treatment being given, and any side effects of the cancer or treatment. An isolated melanoma that is removed, for ex... Read More
A 36-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
As long as the HF: Hay fever, or allergic rhinitis, can trigger swelling or inflammation in other parts of the body. The lungs are one of the most commonly affected area... Read More
A 20-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Possibly: It really depends on the nature of the biopsy, and there are multiple different types. On one end of the spectrum are shave biopsies, for example, whe... Read More
A 21-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
It can't hurt!: It certainly can't hurt. Common hygiene practices prevent infection and transference of many infections, fungal ones included. There are exceptions to... Read More
A 24-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
A couple of options: Hi there, i've seen two options work best for patients. First, there are the sleep number beds. These beds allow you to customize the firmness to you... Read More
A 25-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Sometimes: Allergic asthma is considered an inheritable condition -- meaning it can be genetic. But not all children of a mother or father with asthma will devel... Read More
A 38-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Possibly: Technically speaking, asthma is usually an allergic condition. That is, the symptoms develop due to allergies to pollens, mold, etc. However, about 10... Read More
A 35-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Yes and No: In the short term, yes, the airways become inflamed with asthma attacks, and this leads to overproduction of mucous as well. Typically people recover ... Read More
A 43-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Several things!: First, coughing is actually a good thing, as it's the body's way of directly eliminating mucous. Second, medications like Mucinex can loosen up the mu... Read More
A 32-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Absolutely: Just like asthmatics can be olympic sprinters or swimmers, or anything else they want to be. The key is asthma control, not whether you have asthma or... Read More
A 33-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
In many ways: Asthma is an inflammatory disease of the lower airways or lungs. It is defined by its ability to cause swelling in the airways, increase mucous produc... Read More
A 30-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
No, not always.: There are many different types of allergic reactions. Most of us think of immediate reactions to substances like foods. However, that is only one type... Read More
A 41-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Other symptoms: It depends on whether other symptoms are present. With an allergic reaction, itching is a prominent component. The rash may appear as raised red welts... Read More
A 43-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
It depends: It really depends on the age of the child, and whether you're talking about food or environmental allergies. I generally will skin test children over ... Read More
A 33-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
It depends...: It really depends on how much is given. If a small overdose is given typically no changes occur. If a large overdose, say 3-4 times the normal dose, t... Read More
A 37-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Sure!: One good option to consider is nasal saline, a mixture of water and salt. This is commonly marketed as nasal saline spray or a rinse. Either way, the ... Read More
A 33-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Allergy shots!: The best way to get to the bottom of allergies; that is, to train the immune system to no longer react to known allergens, is to pursue allergy shots.... Read More
A 17-year-old female asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Depends: It depends on the nature of your reaction. Typically a lubricant reaction constitutes a contact reaction, so you'd experience itching, rash and rednes... Read More
A 40-year-old member asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Avoidance: Avoidance of Omnicef (cefdinir) is key. But, it's equally important to know that you're likely not allergic to all antibiotics that are considered in ... Read More
A 26-year-old male asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Sounds like eczema: I'd start with hydrocortisone to the affected areas twice a day. You can get the OTC 1% ointment at any pharmacy or market. The key is to apply once a... Read More
A 24-year-old female asked:
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Probably viral: Think of tonsils like stations where your immune system can work and live. From there the immune system can fight off infections in the head and neck ... Read More

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Testimonials
Recommendations and Thank you notes are endorsements given from patients or other doctors.

7
Recommendations
258
Thank you notes
Aug 15, 2014
Dr. Davidson is very knowledgeable in his field of Allergy/Immunology. I gladly refer my patients to him
HealthTap member
Oct 2, 2011
Answers are well defined and understandable. Thanks doc for the second opinion!
HealthTap member
Mar 30, 2015
Dr. Davidson is an amazing doctor! #nationaldoctorsday2015 #virtualflower1
HealthTap member
Thanks doc! I took naproxen sodium to ease the pain for my swollen foot. It helped the pain but my eye swelled badly after about an hour later.
HealthTap member
Thank you so much, i will go to my doctor first thing tomorrow and advise him on the tips you gave me. Thanks.
HealthTap member
Thank you, your quick reply made me feel good! Thanks I thought something was wrong with my stomach

Education & Training

Medical/Graduate school

UCLA School of Medicine, CA
Graduated 2003MD

Residency

Harbor UCLA Medical Center
Completed 2006

Awards

HealthTap Founding Doctor

Affiliations

AAAAI
ACAAI
90,000 U.S. doctors in 147 specialties are here to answer your questions, provide medical advice, write prescriptions, and more.
Answer emailed
in 24 hours or less