Psoriasis Tracker Template: Weekly PASI Score, Body Surface Area

A Daily Tracker Built Around PASI Body Regions, Not a Generic Skin Log

A psoriasis tracker built around the PASI scoring system turns subjective skin assessments into objective data.

This psoriasis tracker uses PASI gives you a structured way to track what matters.

If you have plaque psoriasis, you know the frustration of describing a flare at a dermatology appointment. It was bad. The plaques came back on your scalp. The ones on your elbows got worse after a stressful week. The biologic was working, then it was not, then it was. Your dermatologist needs a clearer picture than that to make treatment decisions, and you deserve a clearer picture of your own disease than memory can give you. This psoriasis tracker uses PASI is designed to help you do exactly that.

This template is built around the four body regions used in the Psoriasis Area and Severity Index, known as PASI: head, upper limbs, trunk, and lower limbs. PASI is the most widely used severity measure in clinical trials and in dermatology clinics. You are not going to calculate a full PASI score at home, but you can track the same four regions with the same components so that your log maps directly to the language your dermatologist uses.

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Why PASI Regions and Components Matter

PASI splits the body into four regions and evaluates three components for each region: redness (erythema), thickness (induration), and scaling. Each component is rated on a 0 to 4 scale, and the region is also assigned an area score. The full PASI is a weighted calculation that your dermatologist or a clinical trial site will do. You do not need the full score to track your own disease meaningfully. What you need is a consistent rating of the same components in the same regions each week.

Biologic treatments like adalimumab, secukinumab, ixekizumab, risankizumab, and guselkumab have been studied against PASI improvement targets in their trials. PASI 75 means a 75 percent improvement in total score, PASI 90 means 90 percent improvement, and PASI 100 means clear skin. The Dermatology Life Quality Index, or DLQI, is often tracked alongside PASI in trials and clinics.

What to Log Each Week

Rating Each Region on Three Components

For each of the four regions, rate erythema, induration, and scaling on a 0 to 4 scale where 0 is clear and 4 is severe. A region with no involvement at all is just a row of zeros. Write the numbers even when they do not change. A long string of identical numbers is itself meaningful data: it means things are stable.

Itch and Pain

Rate your overall itch on a 0 to 10 scale for the week. Same for any psoriasis related pain, especially if you have psoriatic arthritis symptoms in joints near the plaques.

DLQI Style Quick Check

On a 0 to 3 scale, rate how much your skin affected daily activities this week: work, social, clothing choices, sleep, exercise. This captures the quality of life piece that pure lesion scores can miss.

Possible Triggers

Note anything that might be driving a change. Stress, infection, strep, new medications, alcohol, cold or dry weather, a skin injury, stopping or starting a treatment. Over months of logging, the patterns become clear even if individual triggers look coincidental.

Current Treatment

Topical, phototherapy, oral systemic, biologic with the name, and how long you have been on it.

The Weekly Psoriasis Log

Week	Head	Upper limbs	Trunk	Lower limbs	Itch (0-10)	Triggers	Treatment
1	E/I/S ___/___/___	___/___/___	___/___/___	___/___/___	___	___________	___________
2	___/___/___	___/___/___	___/___/___	___/___/___	___	___________	___________
3	___/___/___	___/___/___	___/___/___	___/___/___	___	___________	___________
4	___/___/___	___/___/___	___/___/___	___/___/___	___	___________	___________
5	___/___/___	___/___/___	___/___/___	___/___/___	___	___________	___________
6	___/___/___	___/___/___	___/___/___	___/___/___	___	___________	___________

Each cell in the region columns is erythema/induration/scaling, in that order. Take weekly photos of any region where you can see meaningful change. Consistent lighting and angle matter more than perfect photography.

How to Use the Log at Your Dermatology Appointment

Hand the sheet to your dermatologist at the start of the visit. If you are starting a new biologic, the log from the first 12 to 16 weeks tells you whether you are responding to it on a clinical trial timeline. Most biologics are assessed for response at 12 or 16 weeks, and if your log is showing minimal improvement by that point, that is a real conversation to have about dose adjustment, switching biologics, or adding a topical.

If you are stable, the log shows that too. Stable is a good outcome and worth protecting. Do not feel you have to show improvement every visit.

For a digital version with body map selection and automatic trend graphs, the Psoriasis Tracker App lets you tap the affected regions on a body diagram and enter the same component scores.

What 30, 60, and 90 Days of Tracking Reveals

The first 30 days of logging usually teaches you what your normal pattern actually is, which is often different from what you remembered. By 60 days, trigger patterns become visible, especially for stress and weather. By 90 days, if you are on a biologic or a new systemic treatment, the log tells you whether the treatment is in the range the clinical trials predicted or whether it is time to talk about the next option.

Start with this week. Rate the four regions tonight. That is all day one needs.

Medical disclaimer: This post is for informational purposes only and does not constitute medical advice. Talk to your dermatologist about any treatment changes.