Dr. Joshua Davidson
Allergy and Immunology
CA
20 years experience male
Locations
Office
My office hours
Thursday: 8:00am - 5:00pm
Show moreInsurances 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.
SpecialtiesDoctors 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.
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 22-year-old member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Unfortunately, yes: Yes, it is possible. The skin infections often recur in the same patient. Athlete's foot, for example, is a common type of fungal infection that may o... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.1k viewsAnswered >2 years ago
A 24-year-old member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Yes: In the last few years, I have seen acupuncture help with various inflammatory conditions. These include seizures, asthma, arthritis, etc. Have i seen ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.3k viewsAnswered >2 years ago
A 36-year-old member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
It depends: If a person is having difficulty breathing due to an asthma attack, then they should receive albuterol, a common asthma rescue medication. If a person... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.3k viewsReviewed >2 years ago
A 41-year-old member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
A few things: The answer to your question is complex. There are cases where nothing can be done -- sometimes babies are genetically predisposed to develop allergies... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.9k viewsReviewed >2 years ago
A 45-year-old male asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Several options: Sorry to hear about the symptoms. Vaseline is rarely a great option for lip therapy. On the other hand, non-petroleum based moisturizers can help, in ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.3k viewsReviewed >2 years ago
A 33-year-old female asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
It's complicated...: Typically oral steroids reach their peak effect at ~8 hours after dosing. This doesn't mean that their work is done. The effect of steroids is cumulat... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.9k viewsReviewed >2 years ago
A 25-year-old member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
The immune response: An allergy is caused by specific cells and/or proteins in the body that are designed to recognize specific sites in the allergen, i.e. Peanut, walnut,... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.3k viewsAnswered >2 years ago
A female asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Sounds like a virus: Or possible a bacterial infection. Sometimes it's difficult to distinguish between the two. It sounds like a pharyngitis, or inflammation of the back ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
3.8k viewsAnswered >2 years ago
A 31-year-old member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
I'd avoid it...: While the exact recipe is a trade secret, I've seen reports of pine nut allergic patients experiencing reactions. I've asked patients to avoid this al... Read More
Created for people with ongoing healthcare needs but benefits everyone.
3.9k viewsAnswered >2 years ago
A 27-year-old female asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Theoretically, yes.: Full body inflammation, as you put it, can arise in different ways. If you're talking about autoimmune diseases like lupus, those conditions carry an ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
3.8k viewsReviewed >2 years ago
A 38-year-old member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Allegra (fexofenadine) alone: Allegra d contains a decongestant that is a poor long term option. If you are dealing with chronic nasal congestion i would recommend alternative trea... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.8k viewsReviewed >2 years ago
A 25-year-old member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Inflammation: Any inflammatory response can lead to the sensation of a "knot" under the skin. This common reaction is seen after vaccinations in muscles. Any punctu... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.1k viewsAnswered >2 years ago
A 35-year-old member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Other medication: People who are truly allergic to Aspirin can undergo a procedure called Aspirin desensitization to allow for Aspirin consumption. If you're interested... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.3k viewsAnswered >2 years ago
A 30-year-old member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Test kits: There are many different kits that one can buy to test indoor air quality. I trained at a great respiratory center in denver, co, and they have a kit ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.3k viewsReviewed >2 years ago
A 31-year-old member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Yes: "walking pneumonia" is an indolent, more subtle form of pneumonia that can occur. It can cause some mild cough, fever, and fatigue, but it doesn't pre... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.3k viewsReviewed >2 years ago
A 53-year-old member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
It depends: It depends on the type of medication. Asthma rescue medications typically contain albuterol, a medication that relaxes smooth muscles that can tighten... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.3k viewsReviewed >2 years ago
A 24-year-old member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Possibly: The question is why were you taking the nsaids in the first place. Viral or bacterial infections can cause angioedema -- swelling/redness of the head/... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.3k viewsReviewed >2 years ago
A 33-year-old member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Careful observation: Fortunately, the vast majority of people are not allergic to insect stings. Immediate management of a sting, even in a baby, includes placement of an ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.3k viewsReviewed >2 years ago
A 38-year-old male asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Typically no: Antihistamines are generally not considered a group of medications that directly cause gout. However, antihistamines can cause dryness, and if that pr... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.3k viewsReviewed >2 years agoMerged
A 21-year-old member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Not necessarily: Gerd can run in families, but genetics alone don't typically cause gerd. What also runs in families are dietary habits, obesity and other risk factors... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.1k viewsAnswered >2 years ago
A 32-year-old member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Pollen: Pollen are microscopic "seeds" essentially, that help plants expand and grow in new areas. They are designed to float in the air and travel to these n... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.3k viewsReviewed >2 years ago
A 23-year-old member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
It depends: Great question. It really depends on two factors: 1. The severity of the reactions, and 2. The frequency of the reactions. When the reactions become t... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.3k viewsReviewed >2 years ago
A 33-year-old member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Possibly: Salmonella outbreaks have been sourced back to peanut butter in the past, so it's certainly possible that peanut can carry the bacteria.
Created for people with ongoing healthcare needs but benefits everyone.
6.1k viewsAnswered >2 years ago
A 28-year-old member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
No: It just implies that you have a tendency to develop changes in your airways that are consistent with asthma. These include swollen lower airways, incr... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.3k viewsReviewed >2 years ago
A 36-year-old member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Probably not normal: It could be allergies, or it could be a sign of infection or asthma. Typically the mucous either drains from the nasal passage/sinuses down into the t... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6.3k viewsAnswered >2 years ago
A 47-year-old member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Antihistamines: Allergy medications, typically antihistamines such as Zyrtec, Allegra, Claritin and Benadryl, (diphenhydramine) can be very helpful for hives. They ca... Read More
Created for people with ongoing healthcare needs but benefits everyone.
3.8k viewsReviewed >2 years ago
A 24-year-old female asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Possibly: If you consider pre-treatment with antihistamines like zyrtec or allegra, (fexofenadine) that should help reduce the occurrence of urticaria. The lase... Read More
Created for people with ongoing healthcare needs but benefits everyone.
4.7k viewsAnswered >2 years ago
A 63-year-old female asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
It depends: While that level of lymphocytes is low, there are reasons why a person can have low levels, many of which are part of a normal immune response. When a... Read More
Created for people with ongoing healthcare needs but benefits everyone.
4.1k viewsAnswered >2 years ago
A 28-year-old female asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Soon: It sounds like you've had a contact dermatitis/allergy reaction to the baby oil. Unfortunately, that specific baby oil contains an ingredient that met... Read More
Created for people with ongoing healthcare needs but benefits everyone.
4.1k viewsAnswered >2 years ago
1 comment
A female asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Sure.: Yes, hydroxyzine is fine, but it's fairly similar to Benadryl (diphenhydramine). You may prefer Zyrtec, Allegra or Claritin, as they won't make you as... Read More
Created for people with ongoing healthcare needs but benefits everyone.
3.8k viewsReviewed >2 years ago
A 21-year-old female asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Unlikely: Considering your results, it's unlikely. But one way to learn more is to look at what's called the differential on that test. It lists a series of whi... Read More
Created for people with ongoing healthcare needs but benefits everyone.
3.8k viewsAnswered >2 years ago
A 37-year-old male asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
You need help!: Sounds like a delayed immune response to the mold exposure. History of asthma? You may benefit from inhaled medications to decrease the congestion/cou... Read More
Created for people with ongoing healthcare needs but benefits everyone.
3.8k viewsReviewed >2 years ago
A 32-year-old male asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Rarely, but it can.: Laryngopharyngeal reflux (LPR) or silent reflux can rarely lead to sinus disease in addition to more common symptoms. Sinus disease can in turn lead t... Read More
Created for people with ongoing healthcare needs but benefits everyone.
3.8k viewsAnswered >2 years ago
A 20-year-old female asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Absolutely: There are many possible causes for the symptoms you describe. Immune reactions arise in many different ways, some allergic, some not. In your case, th... Read More
Created for people with ongoing healthcare needs but benefits everyone.
3.8k viewsAnswered >2 years ago
A 46-year-old female asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Many conditions!: It's true that vitiligo causes a hypopigmentation via loss of melanin in certain areas of the skin. However, common superficial fungal infections, ato... Read More
Created for people with ongoing healthcare needs but benefits everyone.
3.8k viewsAnswered >2 years ago
A 18-year-old female asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
It's complicated!: This is a antibody found in the blood of persons who are rhesus negative. That is they do not posses the rhesus antigen on the surface of their red bl... Read More
Created for people with ongoing healthcare needs but benefits everyone.
4.3k viewsAnswered >2 years ago
A 26-year-old male asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Happy to help: As you mentioned, those types of reactions occur in patients with a very strong immune system or response. This type of immune system is often associa... Read More
Created for people with ongoing healthcare needs but benefits everyone.
3.8k viewsReviewed >2 years ago
A member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Get evaluated!: You would probably benefit from an evaluation with an allergist/immunologist where testing can be performed to determine the strength and function of ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
3.8k viewsAnswered >2 years ago
A 21-year-old member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Possibly: Contact allergies can occur when an allergen is in contact with the skin. Body washes, detergents, perfumes/colognes, cosmetics, metals, etc., can all... Read More
Created for people with ongoing healthcare needs but benefits everyone.
3.8k viewsReviewed >2 years ago
A 22-year-old male asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
It can!: Hydroxyzine has a sedative effect, generally a very strong one depending on the dose. That is, the more Hydroxyzine the greater the sedation. Combinin... Read More
Created for people with ongoing healthcare needs but benefits everyone.
4.3k viewsAnswered >2 years ago
A 37-year-old male asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Ignore: High dose antihistamines are always necessary. I typically recommend Zyrtec and Zantac (ranitidine) twice daily.
Created for people with ongoing healthcare needs but benefits everyone.
3.8k viewsAnswered >2 years ago
A 28-year-old female asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Antihistamines: As an allergist I'm seeing A LOT of these types of symptoms with my patients. Antihistamines, or allergy medications, can help. I recommend OTC option... Read More
Created for people with ongoing healthcare needs but benefits everyone.
3.8k viewsReviewed >2 years ago
A 30-year-old female asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Possible eczema: Many possibilities. I noted hydrocodone is one of your meds. As an opiate, it can routinely cause itching and/or rash. The location of your itching an... Read More
Created for people with ongoing healthcare needs but benefits everyone.
3.8k viewsAnswered >2 years ago
A 20-year-old female asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 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
Created for people with ongoing healthcare needs but benefits everyone.
3.9k viewsAnswered >2 years ago
A 20-year-old female asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 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
Created for people with ongoing healthcare needs but benefits everyone.
3.8k viewsReviewed >2 years ago
A 59-year-old male asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 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
Created for people with ongoing healthcare needs but benefits everyone.
3.9k viewsReviewed >2 years ago
A 36-year-old member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 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
Created for people with ongoing healthcare needs but benefits everyone.
3.9k viewsReviewed >2 years ago
A 28-year-old male asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 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
Created for people with ongoing healthcare needs but benefits everyone.
4.7k viewsAnswered >2 years ago
A 37-year-old male asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 years experience
Ignore: Many symptoms can be treated with moisture alone. A 10-15 minute warm shower goes a long way!
Created for people with ongoing healthcare needs but benefits everyone.
3.8k viewsAnswered >2 years ago
A 34-year-old member asked:
Dr. Joshua Davidsonanswered
Allergy and Immunology 20 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
Created for people with ongoing healthcare needs but benefits everyone.
3.9k viewsAnswered >2 years ago
TestimonialsRecommendations and Thank you notes are endorsements given from patients or other doctors.
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