All Symptoms Guide
Complete database of all 40+ symptoms organized by detection tool. Learn danger ratings and identification tips.
Quick Info
Total Symptoms40+
Categories11
Detection Tools8
Symptom Danger Ratings
Green - Safe
Survivor does not need quarantine or liquidation. Even multiple green symptoms are safe.
Allow into Living Block
Orange - Dangerous
Not guaranteed to be zombie virus. Quarantine and monitor for 2-3 days. If symptoms improve, release. If worse or turn, liquidate.
Send to Quarantine
Red - Infected
Definite zombie plague symptoms. Must be liquidated immediately. Will turn and kill survivors overnight if admitted.
Liquidate Immediately
Jump to Category
Eyes
Visual / Matioscope
| Symptom | Danger | Description |
|---|---|---|
Yellow Eyes | Safe | Whites of eyes turn bright yellow. Matioscope shows entire inner eye yellow. |
Conjunctivitis | Danger | Corners of eyes turn red, may appear puffy or cloudy. Matioscope shows no internal changes. |
Red Eyes | Infected | Whites of eyes turn bright red. Matioscope shows entire inner eye red. |
Skin Markings
Visual / Scanner
| Symptom | Danger | Description |
|---|---|---|
Freckles | Safe | Small brown/orange dots across cheeks and nose. |
Herpes | Safe | Small misshapen splotches, typically brown/red, without zits. Lab unlock required. |
Bruises | Safe | Large or several medium splotches in blue, green, and yellow mix. |
Skin Rash | Danger | Rash full of zits and whiteheads with small splotches. Lab unlock required. |
Skin Cuts | Danger | Large light splotch with faint or thick scratch marks within. |
Red Bruise | Danger | Several splotches dark red in color. |
Necrosis | Infected | Several splotches dark black in color. Don't mistake tattoos for this! |
Bite Mark | Infected | Bloody human teeth marks. Every bite is a zombie bite - no animal bites exist. |
Skin Color
Visual / Scanner
| Symptom | Danger | Description |
|---|---|---|
Red Skin | Safe | Reddening or blush on the face only. Can be cheeks or entire face. |
Pale Skin | Danger | Entire survivor's skin looks gray or desaturated. |
Green Skin | Infected | Entire survivor's skin appears green or very yellow. Compare with ID photo (Tab). |
Face
Visual
| Symptom | Danger | Description |
|---|---|---|
Nosebleed | Safe | Two lines of blood, one from each nostril. Be wary of mustaches. |
Mouth Bleeding | Danger | Blood coating lower lip running down toward chin. Be wary of beards. Lab unlock. |
Aggression | Danger | Angry expression, often insults player. Higher chance of attacking when sent to quarantine. |
Eye Pus | Infected | Small drop of green pus on corner of one eye. Can be very small. Lab unlock. |
Nose Pus | Infected | Drop of green pus from one nostril, usually prominent. Lab unlock required. |
Thermopulsometer
Thermopulsometer
| Symptom | Danger | Description |
|---|---|---|
Elevated Temp | Danger | Temperature 98.6-105°F (37-40.5°C). Wait for reading to stabilize - it rises over time! |
Elevated Pulse | Danger | Pulse between 120-180 BPM. Pulse reads correctly immediately unlike temperature. |
High Temp | Infected | Temperature over 105°F (40.5°C). Above human survival threshold. |
Extreme Pulse | Infected | Pulse over 180 BPM. |
Stethoscope
Stethoscope
| Symptom | Danger | Description |
|---|---|---|
Sickly Breath | Safe | Breathing with a slight wheeze. Only mark the worst symptom found. |
Nonspecific Respiration | Danger | Heavy wheeze and some gurgling mixed in. Lab unlock required. |
Zombie Growl | Infected | Sounds like a zombie growling instead of any kind of breathing. Lab unlock required. |
Hammer
Medical Hammer
| Symptom | Danger | Description |
|---|---|---|
Absent Reflex | Safe | Arm barely moves, just jerks an inch, never swings. Only check survivors with open mouth/slack jaw. |
Hyperaggressive Reflex | Danger | Survivor swings at you with clawed hand when hit. This will damage you if close! |
Crossed Reflex | Infected | Opposite limb reacts - hit right arm, left one swings. Combined with hyperaggressive = opposite arm attacks. |
Matioscope
Matioscope
| Symptom | Danger | Description |
|---|---|---|
Ocular Spicular Bacterium | Safe | Pink/orange tube with branches, occasionally twirls. |
Thread Cluster | Safe | Bundle of white threads, remains stationary. |
Ocular Helminth | Safe | Small translucent worm that wiggles in a straight line. |
Adenoviral Body | Safe | Greenish-orange ball with long nubs, occasionally pulses. |
Phage Complex | Danger | Cylindrical head on tiny legs, floats in straight line. |
Chromatic Staphylococcus | Danger | Smudge of greenish-yellow goo with wavy motion. |
Necrotic Plume | Infected | Dark black blurry smudge, usually diamond shaped. |
Corneal Infiltrate | Infected | Dull green ball with tiny brown nubs. |
X-Ray
X-Ray Scanner
| Symptom | Danger | Description |
|---|---|---|
Internal Bleeding | Safe | Organ still reddish but covered in bleeding sores. |
Fatty Hepatosis | Safe | Organ covered in yellow splotches. Pancreas is always yellow - ignore it. Lab unlock. |
Color Differences | Danger | Organ colored normal purple or slightly pinkish purple. Lab unlock required. |
Moldy Organ | Infected | Organ colored teal blue. Lab unlock required. |
Organ Necrosis | Infected | Organ almost fully covered in dark black splotches. Lab unlock required. |
UV Tower
UV Tower
| Symptom | Danger | Description |
|---|---|---|
UV Vapor | Safe | Green mist surrounding some part of survivor while UV active. Fly buzzing sound may indicate this. |
UV Contraband | Infected | Green glowing spot on any item from backpack while UV active. Check BEFORE confiscating items! |
UV Symptom | Infected | Red symptom invisible normally but glows green during UV. Can be bites, necrosis, or pus. |
Objects (Baggage)
Baggage Inspection / X-Ray
| Symptom | Danger | Description |
|---|---|---|
Weapon/Contraband | Safe | Weapons, ammunition, drugs in backpack. Confiscate for $100. Don't take food/meds (-$100). |
Internal Contraband | Danger | Items hidden in organs visible on X-Ray. Tag with E, Charlie extracts. Check intestines, stomach, mouth. |
Contaminated Baggage | Infected | Bloody human parts (limbs, heads, organs, bones). Survivor must be liquidated. Confiscating costs $10. |
Pro Tips
- Use the Symptom Scanner at the entrance (upgrade) - lit symbols indicate possible symptom categories.
- Press Tab to see survivor's ID photo - compare skin color to detect changes.
- Some symptoms require lab unlock - send unknown symptoms to laboratory for extraction.
Warning
Missing infected individuals (Red symptoms) will cause them to turn and kill survivors in the Living Block overnight. Always liquidate Red symptoms immediately!