COVID-19

Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Key Takeways EMERGENCY WARNING: If you or someone in your care experiences difficulty breathing, persistent gasping, a high-pitched squeaking sound when breathing in (stridor), inability to swallow saliva, or bluish lips/face, call 911 or go to the nearest emergency room immediately. These symptoms indicate potential … Read more

Medically reviewed by Dr. Adam N. Khan, MD · Last updated October 7, 2026 · 14-minute read A quick note before you read: This is general health information, not personal medical advice, and it cannot diagnose you. If you have trouble breathing, can’t swallow liquids, are drooling, or your throat pain is far worse than … Read more

Medically reviewed by Dr. Adam N. Khan, MD · Last updated October 5, 2026 · 10-minute read A quick note before you read: This is general health information, not personal medical advice, and it can’t tell you what your own risk is only your clinician can do that. What it can do is show you … Read more

Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Quick Summary: EMERGENCY WARNING: If your dog develops severe respiratory distress—such as rapid breathing, open-mouth panting while at rest, blue or pale gums, or extreme lethargy—contact your veterinarian or local emergency animal hospital immediately. Understanding COVID-19 Transmission Between Humans and Dogs When the SARS-CoV-2 pandemic … Read more

Medically reviewed by Dr. Adam N. Khan, MD · Last updated October 5, 2026 · 9-minute read A quick note before you read: This is general health information, not personal medical advice, and it cannot diagnose you. If you or someone near you has trouble breathing, persistent chest pain, new confusion, bluish lips, or can’t … Read more

Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Quick Summary: EMERGENCY WARNING: If you or someone in your care develops severe shortness of breath, continuous pain or pressure in the chest, sudden confusion or difficulty staying awake, or a pale, gray, or blue discoloration of the skin, lips, or nail beds, call 911 … Read more

Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Quick Summary: EMERGENCY WARNING: If you or someone in your care experiences severe trouble breathing, persistent chest pain or tightness, new mental confusion, inability to wake or stay awake, or a pale, gray, or blue discoloration of the lips, skin, or nail beds, call 911 … Read more

Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Quick Summary: EMERGENCY WARNING: If you or someone you are caring for experiences critical warning signs—including severe shortness of breath or persistent chest pressure, new-onset confusion or inability to wake, a drop in oxygen saturation below 95%, or a pale, gray, or blue discoloration of … Read more

Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Quick Answer EMERGENCY WARNING: If you or someone in your care develops severe breathing trouble, persistent chest pain or pressure, new mental confusion, inability to wake or stay awake, or a pale, gray, or blue discoloration on the lips, skin, or nail beds, seek immediate … Read more

Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Quick Summary EMERGENCY WARNING: If you or someone in your care experiences severe difficulty breathing, persistent chest pain or pressure, sudden confusion, inability to wake or stay awake, high fever unresponsive to medication, or a bluish or pale discoloration of the lips, face, or nail … Read more

Last Updated: September 18, 2026 | Medically Reviewed Sources: FDA, CDC, Cleveland Clinic, Johns Hopkins, Cochrane Database Quick Answer: If you have COVID symptoms and your rapid test is negative, retest in 48 hours. A single negative test does NOT rule out COVID-19. If you’re high-risk, contact your doctor immediately don’t wait for a positive … Read more

Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Quick Summary: 1. Medical Overview and Pathophysiology Measles, scientifically known as rubeola, is one of the most infectious viral diseases known to medical science. It is caused by an enveloped, single-stranded, negative-sense RNA virus belonging to the Morbillivirus genus within the Paramyxoviridae family. Humans are … Read more

Medically Reviewed and Compiled by Dr. Adam N. Khan, MD Key Takeaways 1. Medical Overview and Pathophysiology Questions regarding whether COVID is on the rise again reflect observable clinical and epidemiological shifts. Surveillance data from the CDC and World Health Organization (WHO) demonstrate recurring waves of SARS-CoV-2 transmission, primarily driven by immune-evasive subvariants such as … Read more

Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Quick Summary EMERGENCY WARNING: Paxlovid is an outpatient treatment for mild-to-moderate COVID-19 and is not a substitute for emergency room care or oxygen therapy. Call 911 or seek immediate emergency medical care if you or someone in your care experiences: Medical Overview and Pathophysiology Paxlovid … Read more