About
Bio
I am an allergy and Immunology specialist that worked at Mayo Clinic for 24 years and at the University of Florida for 2 years, currently I worked part time doing Allergy in a local practice and I am a part time farmer which I enjoy.
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
Doctor Q&A
71 Answers
20 Agrees
The number of answers this doctor has agreed with.
A 19-year-old male asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Nasal bump: There are a variety of conditions that can produce a nasal bump. Usually nasal polyps are way inside and is hard to see without an instrument. Some le... Read More
Created for people with ongoing healthcare needs but benefits everyone.
59 viewsReviewed >2 years ago
A 33-year-old male asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
If the vaccine is given intramuscular, should work the same. The pain could be more significant in a small muscle and you need a person with experienc... Read More
Created for people with ongoing healthcare needs but benefits everyone.
Answered Apr 23, 2021
A 32-year-old female asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Thin the mucus !!: Dry mouth can be associated with dry nose and dry eyes, is called sicca syndrome and because of the decrease of fluid content, the mucus become more d... Read More
Created for people with ongoing healthcare needs but benefits everyone.
27 viewsAnswered >2 years ago
A 59-year-old female asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Lucky, be careful !: You are a lucky person but still you can get Covid, and age is a problem, so follow the CDC recommendations, is not worth taking a chance.
Created for people with ongoing healthcare needs but benefits everyone.
86 viewsReviewed >2 years ago
A 25-year-old male asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Measure carefully!: Is difficult to interpret your symptoms, if you feel short of breath, if you cannot complete sentences, if you feel febrile although cannot document a... Read More
Created for people with ongoing healthcare needs but benefits everyone.
87 viewsReviewed >2 years ago
A 67-year-old male asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Depends on health: The results of these test and any test depends of the clinical context, example; frequent infections? wait loss? other illness? The save approach is t... Read More
Created for people with ongoing healthcare needs but benefits everyone.
63 viewsAnswered >2 years ago
A 50-year-old female asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Other options: Nasal saline rinse is primarily helpful in clearing mucous, pollen, dust and helps with dryness. If you are congested due to allergies, use a nasal st... Read More
Created for people with ongoing healthcare needs but benefits everyone.
86 viewsReviewed >2 years ago
A 41-year-old male asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Asthma triggers: Asthma can have different triggers, you seem to have two:1. gastric reflux so watch your diet for caffeine, alcohol, spices. Acid reducing meds and e... Read More
Created for people with ongoing healthcare needs but benefits everyone.
88 viewsReviewed >2 years ago
A 22-year-old male asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Hyoid bone pain?: There are a variety of pain structures in the neck that could produce throat pain and one that is probable more frequent that we recognize is "hyoid b... Read More
Created for people with ongoing healthcare needs but benefits everyone.
57 viewsAnswered >2 years ago
A 19-year-old male asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Viral infection: Your symptoms are consistent with a viral infection and at this time you have to think in covid 19. You should be tested for the disease and have to q... Read More
Created for people with ongoing healthcare needs but benefits everyone.
20 viewsAnswered >2 years ago
A 17-year-old female asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Angioedema?: We need more information of time, duration and other symptoms and an exam to know what this is, but yes this could be angioedema, could be an infectio... Read More
Created for people with ongoing healthcare needs but benefits everyone.
59 viewsReviewed >2 years ago
A 73-year-old male asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Look your allergens: The best treatment of allergies is to avoid your allergen, dust mites are in pillows, mattress, box springs and carpets. Get encasings that are air-ti... Read More
Created for people with ongoing healthcare needs but benefits everyone.
73 viewsAnswered >2 years ago
A 34-year-old female asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Most likely, no!: To make a diagnosis of a food allergy you need a history of a reaction like what you describe and the test confirms the diagnosis. Allergy testing pos... Read More
Created for people with ongoing healthcare needs but benefits everyone.
88 viewsAnswered >2 years ago
A 41-year-old female asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Uncommon, possible: People with Lupus can have sun sensitivity with primarily dermatitis, but reviewing literature, sun exposure can be an exacerbating factor for Lupus a... Read More
Created for people with ongoing healthcare needs but benefits everyone.
63 viewsAnswered >2 years ago
A 18-year-old male asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Allergies?: Very interesting symptom with your speech. Tring to interpret with all the itching, could be allergic rhinitis with congestion that produces the press... Read More
Created for people with ongoing healthcare needs but benefits everyone.
75 viewsAnswered >2 years ago
A 38-year-old male asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Possibilities!: You may want to differentiate the area of disorder of your eyes. Staring from outside, if is eyelid dermatitis is worth thinking in an allergic dermat... Read More
Created for people with ongoing healthcare needs but benefits everyone.
83 viewsAnswered >2 years ago
A member asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Bug bites again?: The description of hard little nodules with clear puss do not suggest an allergic reaction since most allergies are hives (urticaria) or a localized c... Read More
Created for people with ongoing healthcare needs but benefits everyone.
63 viewsReviewed >2 years ago
A 54-year-old member asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
My want to consult: I agree that could be allergies, but since predominates in one eye and there is pain in the tip of the nose, you may want to consider a consultation w... Read More
Created for people with ongoing healthcare needs but benefits everyone.
88 viewsAnswered >2 years ago
A 26-year-old male asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Treat the acid !: A sore throat can be caused by many causes viral, strept or other bacterial infections but certainly gastro esophageal reflux can be a cause and is ea... Read More
Created for people with ongoing healthcare needs but benefits everyone.
88 viewsAnswered >2 years ago
A 63-year-old female asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
If you have alpha gal allergy and delay anaphylaxis after eating meat, yes you could use Zyrtec if the symptoms are mild the same with Benadryl. But y... Read More
Created for people with ongoing healthcare needs but benefits everyone.
Answered Jul 20, 2021
A 17-year-old female asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Cholinergic response: Is a normal physiological response that activates the cholinergic system and produces vaso-dilatations and increase secretions.
Created for people with ongoing healthcare needs but benefits everyone.
20 viewsAnswered >2 years ago
A 36-year-old male asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Rare allergy: Castor oil can produce a variety of reaction such as an allergic contact dermatitis, that is the local reaction in the skin only. The exposure by mout... Read More
Created for people with ongoing healthcare needs but benefits everyone.
75 viewsAnswered >2 years ago
A 29-year-old male asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Yes, most likely: The medication in this spray is an adrenaline derivative and produces constriction of the blood vessels of the nose but the more that you use it the s... Read More
Created for people with ongoing healthcare needs but benefits everyone.
24 viewsAnswered >2 years ago
A 31-year-old female asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Chest wall pain?: Is limited the information that you provide and there are multiple reasons for a sore chest and the possible causes may varied depending of the locati... Read More
Created for people with ongoing healthcare needs but benefits everyone.
88 viewsAnswered >2 years ago
A 31-year-old male asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
No need to suffer: No need to suffer with this sinus infection. You need to treat two things: the opening of the sinus drainage and nasal saline, fluticasone can help, n... Read More
Created for people with ongoing healthcare needs but benefits everyone.
88 viewsAnswered >2 years ago
A 26-year-old female asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Some options: You could be correct but there can be other causes such as a nerve irritation or compression, a muscle spasm or contraction, a rib costochondral infl... Read More
Created for people with ongoing healthcare needs but benefits everyone.
27 viewsAnswered >2 years ago
A 48-year-old female asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Although more information would help, is possible that could be related to position, sometimes you could compress a nerve or compress or stretch the j... Read More
Created for people with ongoing healthcare needs but benefits everyone.
Answered Apr 23, 2021
A 18-year-old male asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Just be careful !: In a recent review from the American Academy of Allergy, Asthma and Immunology, asthma in general was not an increase risk factor and they suggested t... Read More
Created for people with ongoing healthcare needs but benefits everyone.
87 viewsAnswered >2 years ago
A 41-year-old female asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Inflammation?: Sun sensitivity in patient with Lupus is mainly in the skin but it can also be a cause of exacerbation of lupus and can produce inflammatory changes i... Read More
Created for people with ongoing healthcare needs but benefits everyone.
63 viewsAnswered >2 years ago
A male asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Contact reactions: The dermatitis that can occur in the ear could be a contact dermatitis and this could be due to irritation or due allergy to a chemical in the ear pie... Read More
Created for people with ongoing healthcare needs but benefits everyone.
75 viewsAnswered >2 years ago
A 40-year-old member asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Cold urticaria: Is very likely “cold induce urticaria”, is a benign although uncomfortable condition, be careful not to jump in cold water that can produce a bad reac... Read More
Created for people with ongoing healthcare needs but benefits everyone.
75 viewsAnswered >2 years ago
A 23-year-old female asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Different asthma: There are different forms of asthma: after URI, due to allergies, due to occupation, others. The common denominator is the inflammatory response and i... Read More
Created for people with ongoing healthcare needs but benefits everyone.
62 viewsAnswered >2 years ago
A 21-year-old female asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Call your doctor: The most important part of health care is good communication with your doctors. Do not be afraid to call him or her and ask what was the concern for t... Read More
Created for people with ongoing healthcare needs but benefits everyone.
59 viewsAnswered >2 years ago
A 19-year-old male asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Viral infection?: Although we can get some symptoms like that and on the next day the symptoms can be gone, with the current Covid and in view that you are young, just ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
20 viewsReviewed >2 years ago
A 21-year-old female asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
The reaction is unusual, do not sound allergic, sounds more a mechanical or dental gum disorder. I would check with a dentist first. Hopefully you fin... Read More
Created for people with ongoing healthcare needs but benefits everyone.
Reviewed Apr 24, 2021
A 16-year-old male asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Call your Doc!: Is difficult to give you an answer with the limited information, there are multiple possible causes from an irritation in the urethra to an infection,... Read More
Created for people with ongoing healthcare needs but benefits everyone.
63 viewsAnswered >2 years ago
A 42-year-old female asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Sinusitis?: Recurring sinusitis is frequently over diagnoses and your symptoms suggest more a form of migraines where symptoms can be in your face, mental changes... Read More
Created for people with ongoing healthcare needs but benefits everyone.
63 viewsAnswered >2 years ago
A 42-year-old female asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Allergy shiners: Allergy shiners occur due to nasal congestion that blocks the venous flow out of the lower eyelid and that is way it looks swollen and dark. The use o... Read More
Created for people with ongoing healthcare needs but benefits everyone.
59 viewsReviewed >2 years ago
A 18-year-old male asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Keep an eye!: Since you are young, your symptoms are mild and you are doing quarantine, I think that you are doing everything well. Keep an eye on fever, shortness... Read More
Created for people with ongoing healthcare needs but benefits everyone.
86 viewsReviewed >2 years ago
A 16-year-old male asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Could be stress!: Palpitation is the perception of the heart beat and can be due to a fast heart beat, extra beats, an arrhythmia but also can be due the extra awarene... Read More
Created for people with ongoing healthcare needs but benefits everyone.
57 viewsAnswered >2 years ago
A 32-year-old female asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Yes but why?: A dry mouth can produce an increase in the density of the normal nasal sinus drainage and that can produce nausea. The question is why the mouth is so... Read More
Created for people with ongoing healthcare needs but benefits everyone.
27 viewsAnswered >2 years ago
A 29-year-old female asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Allergen exposure?: An itchy throat is a very interesting symptom that seems to be prevalent in patients with very significant allergies, usually with other symptoms of i... Read More
Created for people with ongoing healthcare needs but benefits everyone.
88 viewsReviewed >2 years ago
A 42-year-old female asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Solution at hand!: Palpitation is the perception of your heart beating faster or stronger. You have multiple reasons and solutions at hand: dehydration – need to increas... Read More
Created for people with ongoing healthcare needs but benefits everyone.
88 viewsAnswered >2 years ago
A 39-year-old female asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
You need visit: You need to be tested and seen by your doctor. There are several system symptoms and a viral disease including covid can do that. The throat tight sym... Read More
Created for people with ongoing healthcare needs but benefits everyone.
59 viewsReviewed >2 years ago
A 42-year-old male asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Most likely yes: The 89 is a little high, but what is important in BP is to check periodically, see the trend, sometimes compare your equipment with one at your docto... Read More
Created for people with ongoing healthcare needs but benefits everyone.
65 viewsAnswered >2 years ago
A 73-year-old male asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Yes: yes, no problem.
Created for people with ongoing healthcare needs but benefits everyone.
73 viewsAnswered >2 years ago
A 65-year-old female asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Need exam: I think that you need a careful evaluation, specially of your liver and gallbladder. This evaluation will include lab tests and probable imagining lik... Read More
Created for people with ongoing healthcare needs but benefits everyone.
27 viewsAnswered >2 years ago
A 43-year-old male asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Yes, is safe but I prefer to use single medicines instead of combinations that are in the many combinations. For example, if you want a pain reliever ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
Answered Jul 20, 2021
A 39-year-old female asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Allergies! other ?: Post nasal drainage with a stuffy itch nose and throat sounds allergic. With the current epidemic, cough with excessive mucus production is one of the... Read More
Created for people with ongoing healthcare needs but benefits everyone.
83 viewsAnswered >2 years ago
A 27-year-old male asked:
Dr. Juan Guarderasanswered
Allergy and Immunology 41 years experience
Is urticaria: Most of the time is autoimmune or spontaneous urticaria, if there is not a clear relation with a exposure and if you feel well otherwise, try daily Al... Read More
Created for people with ongoing healthcare needs but benefits everyone.
24 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.
31
Thank you notes
HealthTap member
Thank you, but I'm not actually not congested or sneezing. Just itchy throat and occasional itchy/burning eyes. Thanks.
HealthTap member
I should also mention my LDL is 122. I know that's not great in itself
HealthTap member
Thank you! I eat turkey chicken and fish and plant based burgers
Education & Training
Medical/Graduate school
University of Buenos Aires Faculty of Medicine, Argentina
Graduated 1982MD
Medical/Graduate school
University of El Salvador Faculty of Medicine, El Savador
Graduated 1982MD
Affiliations
Mayo Clinic
University of Florida College of Medicine
Publications
Aspiration-induced pulmonary syndromes.
Hereditary Angioedema: Implications of Management.
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