Track Swollen Glands & Lymph Nodes

Lymph nodes sit in clusters and each cluster drains a specific area, so the site of a swollen node is a genuine clue. Nodes under the jaw and in the front of the neck (submandibular and cervical) usually respond to a throat infection, a cold, or a dental problem, tooth abscesses and gum infections are an easy one to miss. Nodes in the groin (inguinal) typically point to an infection or irritation in the genitals, legs, or feet, including recurrent conditions like herpes simplex. Nodes in the armpit (axillary) often relate to an infection or injury on the arm, hand, or chest wall on that side. Nodes at the back of the head or behind the ears can follow a scalp infection or, in children, certain viral illnesses. Logging the site alongside whatever else is going on, a sore throat, a skin cut, a cold sore, helps you and your clinician connect a swollen node to its likely cause rather than treating it as an isolated symptom.

A reactive node, one swelling because of a nearby infection, typically follows the infection it's responding to: it grows over a few days, stays enlarged while your body clears the problem, and then shrinks back over roughly two to four weeks as things settle. It's common for a node to still be faintly palpable for a few weeks after you otherwise feel better, that lag is normal and not a cause for concern on its own. What matters is the trend: a node that is smaller each week is doing what it should. A node that is the same size or larger after six weeks, or one that never really settled between infections, has moved outside the pattern a simple reactive node follows and is worth having examined. Logging the size at intervals, even a rough comparison against a coin or your fingertip, is far more useful than trying to recall "was it bigger last week" from memory.

Recurring swelling in the same node usually means the same drainage area keeps getting irritated or infected. Cold sores and genital herpes (herpes simplex) reactivate periodically, and each outbreak can bring up the nearby nodes, submandibular for a cold sore, inguinal for a genital recurrence, in a predictable way. Chronic or recurrent tonsillitis and sinus infections keep cervical nodes busy. Some people with ME/CFS notice tender cervical or axillary nodes that flare with a crash or increased activity, without an infection driving them, this pattern is actually listed among the diagnostic criteria for ME/CFS. Autoimmune conditions such as lupus can cause swollen nodes as part of a wider flare, alongside joint pain, rashes, or fatigue. Certain medications, including some anti-seizure drugs and allopurinol, are recognized causes of recurrent lymph node swelling too. A log that spans several episodes is what reveals whether your pattern tracks with cold sores, flares, activity, or something else.

Most reactive nodes are soft or slightly firm, mobile under the skin, and tender to the touch, that tenderness is actually a reassuring sign, it usually means active inflammation rather than something more serious. Pay closer attention to a node that is hard or rubbery, fixed in place rather than moving freely when you press it, or painless despite being enlarged, painless growth is one of the features doctors take most seriously. Size matters too: a node larger than about two centimeters (roughly the width of a thumb), especially if it keeps growing rather than settling, warrants assessment. So does any node that hasn't started shrinking within six weeks, or swelling that shows up alongside night sweats, unexplained weight loss, or a fever that won't resolve. None of this means something is seriously wrong, most persistent or firm nodes still turn out to have a benign explanation, but these are exactly the features a clinician needs to examine in person rather than something to keep tracking and wait out.

Yes. Infection is the most common cause, but it's far from the only one. Autoimmune conditions such as lupus and rheumatoid arthritis can swell lymph nodes as part of a systemic flare, alongside joint pain, rashes, or fatigue, without any infection present. A number of medications are recognized triggers, including phenytoin and some other anti-seizure drugs, allopurinol for gout, and certain antibiotics, this is sometimes called drug-induced lymphadenopathy and it typically resolves after the medication is stopped or changed, always in discussion with the prescriber rather than on your own. People with ME/CFS commonly report tender cervical or axillary nodes as part of a crash, with no infection behind them, which is why the criteria for the condition explicitly include this symptom. Stress itself doesn't directly enlarge nodes, but poor sleep and high stress can lower your resistance to the minor infections that do. Logging your medications and stress alongside each swollen-gland episode in Trace Health helps you see whether a non-infectious pattern like this is at play.