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I did some research that I synthesized here to augur a sick liver. (Before hand, often during a cure, signs before rider) besides the jaundice that we know almost all (hand, nails, white of the eyes, and yellow complexion):

The color of the stools (always look at its production after shitting notemment in cure, it is important):

It is dangerous * when the stool is black, "as black as coal" *: it is the sign of dangerous and fatal bleeding (a significant amount of digested blood)
It is also dangerous when the stools are of a pale and ashen color: this may indicate liver and pancreatic problems.
It is the bile produced by the liver which gives the stools their brown color; By not having enough bile, you will have these gray shades indicating the following things *:
An obstruction (possibly gallstones) of the bile secretion or its channels caused by infections, scarring lesions, possibly by a tumor or cancer in the area of ​​the liver, pancreas or gall bladder.

Pancreatitis.

Cirrhosis (hardening) or hepatitis.
Yellow stools are unusual and may be the symptoms of a worrying state of health. Yellow stools can be caused by a condition that reduces the production of lipase in the pancreas or that blocks its delivery into the intestines.

Normal color:

The stools of a medium brown are normal, red depend on food eaten, green considered normal (green vegetables quickly digested fibrous)

Symptoms of a clogged liver:

However, without being in crisis, the liver may be clogged. We will then experience problems of digestion, a feeling of heaviness in the region of the liver.

It is he who is responsible for many of the functions of our body and if it goes wrong, several related symptoms may appear as fatigue, sleep problems, itchiness of the skin, a greater sensitivity to the cold, 'asthma...

Abdominal pain

The manifestations: * The first symptoms of liver cancer are very discreet and go unnoticed. It is often when the cancer has already evolved that repeated pain in the upper right side of the abdomen (which can radiate towards the back of the right shoulder) begin to be felt.
At a later stage, these pains are accompanied by a palpable mass just below the ribcage *. The liver grows, and can be painful. *
Why: * The liver is a very complex organ that performs 3 main functions: it has a purifying role (elimination of toxins and certain substances), a role of synthesis (cholesterol ...), a storage role In particular glucose) and ensures a part of the digestion.

• This is an increase in the size of the liver called hepatomegaly.

Sources:
-medicite.fr
-santemédecine.com
-canalvie.com
-wikihow.com