Histamine is one chemical the body releases during an allergic reaction. Antihistamines work by blocking the effects of histamine. They may help with seasonal allergies, pet allergies, dust or pollen symptoms, mild hives, itching, and some medication-related allergy questions.
Some antihistamines are more likely to cause sleepiness, while newer options may be less sedating for many people. Even “non-drowsy” medicines can still make some patients tired, especially when combined with alcohol, sleep medicine, pain medicine, anxiety medicine, or other sedating medications.
When Telehealth May Help
Telehealth may help when you have non-emergency allergy symptoms and need guidance on which medication may be safer for you. A telehealth visit can review your symptoms, triggers, current medications, medical history, pregnancy status, age, side effects, and whether symptoms sound like allergies or another condition.
Telehealth may also help with hives, itching, seasonal allergies, allergic rhinitis, eye allergy symptoms, medication questions, and deciding whether you need allergy testing, in-person care, or a specialist referral.
Medication Safety Matters
Antihistamines may not be safe for everyone. Older adults may be more sensitive to dizziness, confusion, dry mouth, constipation, urinary retention, and falls. Some antihistamines can be risky with glaucoma, prostate problems, certain heart conditions, liver or kidney disease, or other medications.
Do not combine multiple antihistamines unless a healthcare provider tells you to. Also be careful with multi-symptom cold, flu, sleep, or allergy products because they may already contain an antihistamine.
When Antihistamines Are Not Enough
Antihistamines can help some allergy symptoms, but they do not treat every cause of congestion, cough, rash, swelling, or itching. Symptoms may also be caused by infection, asthma, eczema, medication reaction, food allergy, sinusitis, viral illness, or another condition.
If symptoms are frequent, severe, recurrent, or not improving, you may need a different treatment plan, nasal spray, inhaler review, skin evaluation, allergy testing, or in-person exam.
When It Is an Emergency
Antihistamines are not a substitute for emergency treatment of anaphylaxis. Call 911 immediately for trouble breathing, throat tightness, tongue or lip swelling, wheezing, fainting, severe dizziness, confusion, widespread hives with breathing symptoms, or any suspected severe allergic reaction.
If you have an epinephrine auto-injector and have symptoms of a severe allergic reaction, use it as directed and still call 911.
When In-Person Care Is Needed
Seek in-person care if you have facial swelling, worsening rash, painful rash, fever, eye pain, vision changes, severe sinus pain, wheezing, shortness of breath, recurrent hives, symptoms after a new medication, suspected food allergy, or symptoms that do not improve with treatment.
Telehealth can guide next steps, but it cannot perform allergy skin testing, listen to the lungs, fully examine swelling, or treat a severe allergic reaction in real time.
How TeleDNPnow Can Support You
At TeleDNPnow, we can provide telehealth support for non-emergency allergy and antihistamine questions for patients residing in Arizona. Care may include symptom review, medication safety review, trigger discussion, treatment guidance when appropriate, and referral for in-person care when needed.
Allergy symptoms can affect sleep, work, breathing comfort, and daily life. A telehealth visit can help you choose a safer plan and know when symptoms need a higher level of care.
This article is for educational purposes only and does not replace medical advice, diagnosis, or treatment. If you have trouble breathing, throat tightness, tongue or lip swelling, wheezing, fainting, severe dizziness, confusion, or suspected anaphylaxis, call 911 immediately.