Rate your itch severity, flare coverage percentage, and moisturizer consistency to get your Eczema Control Score and what is driving your skin today.
You wake up at 3 AM having scratched a patch raw in your sleep, and you genuinely cannot say what set it off — the new detergent, the wool sweater, the stressful week, or nothing at all. That 'nothing at all' is almost never true. Eczema goes quiet for two weeks and then erupts as if at random, but the triggers are real and usually findable once you stop guessing and start logging. This tool is that daily check-in. You log Itch Severity (0–10), Flare Coverage as a percentage of body surface affected, Skin Dryness (0–10), your Moisturizer Routine frequency, Current Treatment, Sleep Hours, Sleep Quality — and it returns an Eczema Control Score and a plain-language assessment of your skin state.
The tracker reflects the three pillars of eczema management: skin barrier support (moisturizer routine), trigger avoidance, and treatment adherence. Each pillar has a specific input, so when your score dips, you can see which one is contributing most — often more clearly than a dermatologist visit every three months allows.
Flare coverage percentage — the number dermatologists track
The Flare Coverage field accepts 0–100% of body surface area. The BSA-based estimate is a standard component of clinical eczema scoring systems like EASI and SCORAD. Mild eczema is typically under 10% BSA; moderate is 10–30%; severe is above 30%. You do not need to measure precisely — a rough visual estimate (hands covering about 1% BSA; the back about 18%) gives a consistent enough number for trend tracking.
Logging coverage alongside itch severity matters because the two often diverge. Someone with 20% coverage but very controlled itch is in a different functional state than someone with 8% coverage that is intensely pruritic. The combination of both scores gives your dermatologist a multi-dimensional picture of your disease state rather than just an area measurement.
Moisturizer routine and the skin barrier connection
The Moisturizer Routine field ranges from Skipped today through Once daily, Twice daily, Three times daily, and Full routine (4+x). This input carries significant weight in the Eczema Control Score because emollient therapy is the foundation of eczema management — not a nice-to-have addition. A compromised skin barrier is central to eczema pathophysiology, and consistent moisturizer use reduces transepidermal water loss and helps maintain barrier integrity.
The tracker correlates your moisturizer consistency with your itch and coverage scores over time. Most people with eczema notice that weeks with consistent twice-daily or more application correspond to lower itch and coverage numbers. When that correlation is visible in your log, it is motivating in a way that general advice is not. It also gives you something concrete to discuss with a dermatologist: 'When I moisturize three times daily, my itch drops from 6 to 3 on average.'
Itch severity and sleep disruption — the feedback loop
Sleep disruption is one of the most significant quality-of-life impacts of eczema, and the tracker captures it directly through both Sleep Hours and Sleep Quality — with a customized scale for eczema specifically: Poor means 'woke up scratching,' and Disrupted means 'some sleep loss.' This is more precise than a generic sleep quality rating because it names the eczema-specific mechanism.
The feedback loop is real: night-time itching disrupts sleep, poor sleep reduces the skin's repair capacity and elevates inflammatory markers, which worsens itch the following night. By logging both itch severity and sleep quality each day, you build a documented record of this cycle — useful both for quantifying the impact with your care team and for identifying whether specific interventions (evening wet wrap therapy, bedtime topical, antihistamine for sleep) are breaking the cycle.
Treatment tiers — from OTC to biologic therapy
The Current Treatment field has four options: No treatment, OTC creams/lotions, Prescription treatment, and Biologic therapy. This range reflects the actual treatment ladder for eczema: low-potency emollients, OTC hydrocortisone and barrier creams at the base; prescription topical corticosteroids and calcineurin inhibitors at the next level; and biologics like dupilumab for moderate-to-severe atopic dermatitis at the top.
The treatment tier provides context for interpreting your score. An Eczema Control Score of 55 while on biologic therapy suggests the biologic may not be achieving adequate control and warrants a conversation with your dermatologist. The same score while using OTC creams only may indicate that prescription treatment is appropriate. The score's usefulness depends on honest treatment logging — select the tier that reflects what you are actually using.
Using the tracker to identify personal triggers
Common eczema triggers include certain fabrics, detergents, fragrances, pet dander, temperature and humidity changes, stress, sweat, and specific foods in some individuals. The tracker does not have a dedicated trigger field but the notes functionality and the daily pattern view together let you annotate days when you know you encountered a potential trigger. Over several weeks, the correlation between logged triggers and next-day itch spikes often reveals a personal trigger pattern.
A person who notices that itch severity consistently runs 2–3 points higher in the days following wool fabric exposure has confirmed information, not just a suspicion. Similarly, someone who sees reliable itch reduction during low-stress, high-sleep weeks has identified sleep management as a meaningful lever in their eczema control. Track it daily — your itch and trigger history stays private, free to start, no card ever required.
How to use it
- Rate Itch Severity (0–10) at the same time each day — evening is often most informative since itch typically worsens at night.
- Enter Flare Coverage as a rough percentage of body surface area currently affected, then rate Skin Dryness (0–10).
- Select Moisturizer Routine frequency from the dropdown — be honest, since this field significantly influences the Control Score.
- Choose your Current Treatment tier and log Sleep Hours and Sleep Quality from last night.
- Check the Eczema Control Score and the skin status summary, then note any trigger exposures or relevant activities in your log.
Who it's for
- Person with moderate atopic dermatitis starting dupilumab — Logs itch severity and flare coverage weekly before and after starting biologic therapy, documenting the treatment response timeline to share with their dermatologist at the eight-week follow-up.
- Adult managing eczema primarily through moisturizer and avoidance — Tracks moisturizer consistency alongside itch scores for six weeks, confirming that twice-daily application correlates with an average itch reduction of 2–3 points on their personal scale.
- Parent tracking a child's eczema flares — Logs the child's flare coverage and sleep quality daily to document the severity of sleep disruption for their pediatric dermatologist and make the case for stepping up treatment.
- Person investigating a potential fabric or detergent trigger — Notes in the daily log when they wear a specific fabric or use a new detergent, looking for correlation with next-day itch spikes to confirm or rule out the trigger.
Key terms
- Atopic dermatitis
- The most common form of eczema, characterized by dry, itchy, inflamed skin. Associated with a genetic predisposition to skin barrier dysfunction and immune hypersensitivity.
- TEWL (transepidermal water loss)
- The passage of water through the skin into the environment. Elevated in eczema due to impaired skin barrier function; consistent moisturizer use helps reduce TEWL.
- Emollient
- A moisturizer that reduces water loss from the skin by forming a protective layer. Central to eczema management; thicker formulations (ointments) are generally more effective than lighter lotions.
- BSA (body surface area)
- A way to express the extent of skin involvement as a percentage of the total skin surface. Used in clinical eczema scoring systems like EASI and SCORAD.
Frequently asked questions
How do I estimate body surface area coverage accurately?
The 'rule of nines' is the standard rough guide: the head is about 9%, each arm about 9%, each leg about 18%, the front torso about 18%, and the back about 18%. Use your palm to estimate small patches — your palm plus fingers represents roughly 1% BSA. A rough estimate consistently applied is useful; precision is less important than consistency.
Should I log on completely clear days?
Yes — clear days are your baseline. They establish what your lowest achievable itch and coverage scores look like, which makes any worsening legible relative to your personal best. Without clear-day data, the trend line is incomplete.
My eczema is primarily on my hands — does the percentage still work?
Yes, just estimate the affected area relative to your total body surface. Both hands are approximately 4–5% BSA. Logging a consistent percentage is more useful than trying to be exact — the trend matters more than the absolute number.
How often should I see a dermatologist for eczema?
For mild eczema managed primarily through moisturizers and OTC treatments, annual checkups are often sufficient. For moderate to severe eczema, or any time your control score is consistently low despite treatment adherence, schedule a sooner visit. This tracker gives you data to bring to that appointment whenever it happens.