How to Treat Internal Bleeding

What Internal Bleeding Does and How to Spot It

Internal bleeding in Casualties: Unknown is easy to miss until your oxygen and consciousness are already sliding. The game can show dropping blood volume without an obvious wound, so knowing how to treat internal bleeding early can mean the difference between a manageable injury and a fatal hemothorax. This guide walks through the internal bleeding moodle, the hidden bleed value, the supplies that actually lower it, and the warning signs that you need a chest drain or emergency embolism care.

Internal bleeding is tracked as a hidden value from 0 to 100. That value translates to a maximum bleed rate of about 0.21375 L/m, although natural blood regeneration at 100 Satiation effectively caps the practical loss closer to 0.16 L/m. Each point of internal bleeding adds 0.00855 L/m to your total bleeding rate. Because the number is hidden, use the internal bleeding moodle and symptom thresholds as your first confirmation tool.

The moodle appears once the hidden value is above 5. At the same threshold, nosebleeds begin, and higher values trigger periodic vomiting of blood. If your blood volume is dropping but you cannot find an external wound, assume internal bleeding until proven otherwise. Dressings and bandages only manage external bleeding; they will not fix blood pooling inside the chest cavity.

What Raises Your Internal Bleeding Value

Most serious internal bleeding starts with trauma to the head, thorax, or abdomen. A fracture is the clearest example: breaking a head or thorax bone adds 34 points, while breaking another limb adds 10. A hard impact to the head or thorax has a 66% chance to add 0.22 × force / armorReduction. That means armor matters, but a strong enough hit can still open a hidden bleed.

Several other systems can push the value upward. An abdomen with muscle health below 5 adds 0.2 points every second, which is a slow but relentless problem. Hard stimulants add 0.06 per second, and the rate becomes 3.5 times higher if you have more than about 61 mL of the stimulant in your system at once. Avoid stacking hard stimulants while you are already bleeding.

This list is not a reason to avoid every risk. It is a reason to check your status after each big hit. A character who takes a turret burst, gets clipped by an explosion, or breaks a rib should not wait for symptoms to become severe before looking for a procoagulant or L.R.D.

Treatment Priority: How to Treat Internal Bleeding

Start by confirming that the bleed is internal. Check for the moodle above 5, a rising bleeding rate without a visible cut, nosebleeds, or blood vomiting. Treat external wounds with dressings if they are present, but do not expect those dressings to stop the hidden chest bleed. The main internal-bleeding medicines are procoagulant and L.R.D., with L.R.D. Serum giving the strongest documented reduction when injected into the thorax.

Use the treatment table below as a priority list rather than a shopping list. L.R.D. Serum at 25 mL into the thorax cuts internal bleeding by 55%. A Makeshift L.R.D. with the same 25 mL injection cuts it by 25%. If you have a healing crystal, touching it reduces current internal bleeding to 50% of its prior value. Helluce lowers it by 20%, and Bunchunk lowers it by 25%. Chest drains are for hemothorax, not for the internal bleed itself.

At low values, natural recovery can finish the job. Internal bleeding heals by 0.045 every second on its own. Hemothorax heals by 0.036 every second only when internal bleeding is completely gone. That difference matters: if you leave even a small internal bleed running, the hemothorax will keep developing or hold steady instead of recovering.

Hemothorax: When Internal Bleeding Becomes a Breathing Problem

Hemothorax is the accumulation of blood around the lungs. It rises whenever internal bleeding is above 5, at a rate of up to +0.22 per second. It has no upper limit, so a long untreated bleed can become a breathing emergency. The hemothorax moodle appears at 40 or more, and a chest drain applied to the thorax reduces the value by 35.

The symptoms are not just flavor. Each point of hemothorax lowers maximum oxygen by 0.3, reduces respiratory rate by 0.5, and pushes the thorax toward a minimum pain level of roughly 1 per 4 points of hemothorax. At 30 hemothorax, mild hypoxemia can begin. If the condition is left to develop, it can lead to cardiac arrest and death. Treating the internal bleeding prevents hemothorax from continuing to grow.

Pulmonary Embolism: The Treatment Trap

The biggest mistake with internal bleeding treatment is overcorrecting with viscosity-raising medicine. When blood viscosity rises above 90, a pulmonary embolism can develop with a 1.667% chance every second. It drains the thorax’s muscle health by 0.6 per second, setting a timer of about 2 minutes 40 seconds from full thorax health to lung failure. A bruise kit or L.R.D. can extend that timer, but neither is a permanent fix.

Pulmonary embolism is most commonly caused by overusing procoagulant or wound glue, or by using those medicines while Venom is active. Venom also raises blood viscosity and can stack to critical levels. Once viscosity falls below 50, the embolism ceases. Streptokinase is the only medication that instantly resolves the condition. If you are treating a hidden bleed, use the lowest effective amount of procoagulant and stop once the bleed is under control.

Brain damage deserves a special warning because low oxygen can cause it. Brain health can recover slowly, and items such as Braingrow, Neural Booster, or Mindwipe can restore it, but more than one Neural booster adds 100 internal bleeding. If you are already fighting a chest bleed, that trade can turn a recoverable mistake into a fatal one.

FAQ

What is the fastest way to treat internal bleeding?
Use L.R.D. Serum on the thorax for a 55% reduction, or a Makeshift L.R.D. for 25%. If hemothorax is present, add a chest drain for a 35-point reduction. Procoagulant is a specific internal-bleeding medicine, but it raises blood viscosity, so avoid overusing it.

How do I know it is internal bleeding and not a normal wound?
Look for the internal bleeding moodle above 5, nosebleeds, blood vomiting, or a falling blood volume with no visible wound. Dressings can slow external bleeding, but they will not treat blood pooling inside the chest. If symptoms continue after external wounds are covered, treat it as internal bleeding.

Can treating internal bleeding cause a pulmonary embolism?
Yes. Overusing procoagulant or wound glue can push blood viscosity above 90 and trigger a pulmonary embolism. Using those items while Venom is active is especially risky. Streptokinase is the only medication that instantly resolves the embolism, so use viscosity-raising treatments carefully.

Does internal bleeding heal on its own?
It heals by 0.045 per second, so low values can recover with monitoring. Hemothorax only heals by 0.036 per second when internal bleeding is completely gone. If the value is high, symptoms are worsening, or hemothorax has appeared, use L.R.D., a chest drain, or another supported treatment instead of waiting.