COVID-19

Myocarditis, or inflammation of the heart muscle, has been a topic of discussion since the rollout of COVID-19 vaccines. A viral video circulating on social media shows a young woman in a hospital describing sudden chest pain initially thought to be a heart attack, later diagnosed as heart inflammation via catheterization with no arterial blockage. … Read more

Is SARS-CoV-2 a Hidden Driver of Cancer Risk What the Latest Research Suggests

Early Kidney Injury Detection in Long COVID Biomarkers

Persistent taste loss after infection with COVID-19 has remained unexplained for many patients. A recent study analyzing taste-cell genetics identified a biological abnormality in specific taste receptor cells responsible for sweet, bitter, and umami perception. Researchers used the WETT (Whole-Mouth Taste Test) to compare patient reports with objective measurements. The results showed a clear match … Read more

People living with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) and Long COVID often experience severe symptom flare-ups after even small amounts of physical or mental effort. This pattern is called Post‑Exertional Malaise (PEM). Recent clinical observations suggest the problem may start before activity even begins. Multiple body systems may already be impaired: When the body attempts … Read more

Medically Reviewed and Compiled by Dr. [Adam N. Khan], MD. New COVID strain symptoms can look similar to earlier versions of COVID-19, but some patterns have shifted over time. Most recent strains continue to spread through respiratory droplets and close contact. Symptoms range from mild cold-like signs to severe breathing problems. What Is a New … Read more

Yes, Diarrhea is a recognized symptom of COVID-19. It can occur alone or with other symptoms such as fever, cough, fatigue, and loss of taste or smell. COVID-19 affects not only the lungs but also the digestive system. In some patients, diarrhea appears early and may even be the first sign of infection. Medical research … Read more

Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Quick Summary The COVID incubation period is the time between exposure to the SARS-CoV-2 virus and the start of symptoms. Most people develop symptoms within 2 to 5 days, but it can range from 2 to 14 days. Some individuals remain asymptomatic yet can still … Read more

Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Introduction Severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2), the virus that causes COVID‑19, is primarily known for its respiratory manifestations. However, gastrointestinal (GI) involvement, including diarrhea, has been well‑documented in clinical studies and systematic reviews. This article examines the evidence, mechanisms, clinical presentation, differential considerations, … Read more

Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Overview of COVID‑19 Duration Acute Phase Most people infected with SARS‑CoV‑2 recover from the acute COVID‑19 illness within 4 weeks of symptom onset. Recovery timelines vary with symptom severity: Typical Timeline Breakpoints The clinical literature commonly divides the course of COVID‑19 into phases: Long COVID … Read more

Medically Reviewed and Compiled by Dr. Adam N. Khan, MD Introduction: What This Chart Reflects This article summarizes symptoms currently associated with acute COVID‑19 infection as recognized by major public health authorities in late 2025/early 2026. Symptoms of COVID‑19 hold continuity with prior years but may shift in prevalence due to viral evolution, immunity from … Read more