Symptoms

Excitement

Dopamine release triggers delicious anticipation for the future which must be shared. Increases infectivity.

Fatigue

Extreme tiredness makes people weaker and less productive

Festive Tendrils

Tendril production in the cerebral cavities begins. Enables increased control over host brain

Fly Magnet

An ability to thrive in both ape and human faeces allows rapid spread through sewage systems. Increases cross-species transmission

Fomites 1 (Shadow Plague)

Pathogen survives outside of body, transmitted via external objects. Increases infectivity, especially in arid environments.

Fomites 2 (Shadow Plague)

Pathogen able to survive on an increased variety of surfaces. Increases infectivity, especially in arid environments.

Friendship

Beta receptor blockers calm host, promoting socialising and making new friends. Increases infectivity, and chance of mutation.

Frontal Mesh

Tendrils mesh with frontal lobe - the conscious thought centre - and gain ability to mentally manipulate host

Gastric Ulceration

Multiple sores develop in the lining of the stomach, causing severe pain in the abdominal region. Can be lethal

Gastroenteritis

Inflammation of the GI tract causes frequent vomiting. Significantly increases infection rates

Gluttony

Release of endocrine disruptors results in overeating, feeling sick and no longer fitting into clothes. Reduces happiness

Haemoptysis

Haemorrhagic Shock (Shadow Plague)

Severe loss of blood volume causes oxygen deprivation, loss of consciousness, and death

Hallucinations

Occipital lesions created, causing severe hallucinations. Lack of awareness increases transmission chance as well as risk of injury

Harmony

Anandamide tap helps hosts realise that long term happiness is the most important thing in life. Hosts actively resist cure development.

Headache

Headache is a symptom available in the Simian Flu DLC, in addition to the Nipah Virus, Mad Cow Disease and Swine Flu scenarios, this symptom also appears in Multiplayer Mode. It makes it difficult to concentrate on infected, decreasing cure speed.

Hepatic Failure

Chronic replacement of normal liver cells with scar tissue causes liver to fail, resulting in rapid death

Hydrocephalus

Cerebrospinal fluid accumulates in cavities in the brain, increasing intracranial pressure. Highly lethal without treatment

Hyper Salivation

Inflammation of the submandibublar gland increases saliva production and infection rates

Hyper Sensitivity

Increases likelihood of allergic reactions which can distract the immune system. Rich nations particularly vulnerable.