Health Indicators

Indicators will pop up adjacent to your general health status during certain conditions. This is a bad thing, so you should pay attention to them.

Radiation

There is no longer a symbol for being radiated, so you may want to keep a medical analyzer on hand to scan yourself when you see your health dropping for unknown reasons. If you seem to be gaining radiation rapidly, get to medbay as soon as possible. Radiation causes toxin and burn damage, radiation sickness, and may result in good or bad (mostly bad) mutations.

Bleeding

Blood is pouring out of your open wounds. As humans don't have an infinite supply of blood, you should ideally head over to medbay and ask for a bandage or suture, or close the wound in some other way. Otherwise, you will eventually pass out and die after losing a large amount of blood.

Temperature

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It's too cold! You move at a crawl while at this temperature. If you're standing on a space tile, you'll take burn damage. This status takes awhile to go away, even if you move into a room with normal temp. Space heaters, certain exosuits and hot beverages will help you heat up.

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It's too hot! Usually an indicator that you're on fire. If you can't find a fire extinguisher, use the stop-drop-and-roll technique. To do this, click on the STAND button (so that it switches over to REST) and once you are laying down, spam the RESIST button until the flames have been extinguished.

Atmosphere

You are suffocating, generally because you're in space or hull breaches have rendered a part of the station uninhabitable. Put on some internals or move to a safer area. If you have a gas tank equipped and this pops up, make sure it's not empty or that you haven't set the pressure too low. By default, the lowest possible setting for 100% oxygen (emergency oxygen tank, jetpack) is 17 kPa. Air mix tanks require 85 kPa.

The biohazard symbol indicates that you're breathing plasma or possibly really bad farts. If it is the former, you'll take toxin damage as long as you do, so get some internals and leave the area before some idiot sets the air on fire.

This indicates that the air you are breathing is too hot and is literally burning your lungs. You will take burn damage very quickly as long as you expose yourself to this atmosphere. Generally a sign of a engineer pushing the engine to its limits and beyond. Quickly get your internals on and get out of there.