The darkening of the skin due to arsenic poisoning is called

Black syndrome
Diffuse melanosis
Skin scaling
None of these

The correct answer is: A. Black syndrome

Arsenic poisoning can cause a variety of symptoms, including skin darkening. This is known as melanosis arsenicalis, or blackfoot disease. It is a serious condition that can lead to death.

The darkening of the skin is caused by the deposition of arsenic in the skin. This can occur in any part of the body, but it is most common on the palms of the hands and soles of the feet. The skin may also become thickened and scaly.

Other symptoms of arsenic poisoning include:

  • Nausea and vomiting
  • Diarrhea
  • Abdominal pain
  • Headache
  • Dizziness
  • Fatigue
  • Weakness
  • Loss of appetite
  • Weight loss
  • Hair loss
  • Itching
  • Rash
  • Numbness and tingling
  • Muscle cramps
  • Seizures
  • Coma

If you think you may have been exposed to arsenic, it is important to seek medical attention immediately. There is no antidote for arsenic poisoning, but treatment can help to prevent or reduce the severity of the symptoms.

Black syndrome is a rare but serious condition that can occur as a result of arsenic poisoning. It is characterized by the darkening of the skin, particularly on the palms of the hands and soles of the feet. The skin may also become thickened and scaly. Black syndrome is caused by the deposition of arsenic in the skin. This can occur in any part of the body, but it is most common on the palms of the hands and soles of the feet.

The darkening of the skin is caused by the deposition of arsenic in the skin. This can occur in any part of the body, but it is most common on the palms of the hands and soles of the feet. The skin may also become thickened and scaly.

Black syndrome is a serious condition that can lead to death. There is no cure for black syndrome, but treatment can help to manage the symptoms and prevent further damage to the skin. Treatment may include:

  • Removal of the arsenic from the body
  • Treatment of the symptoms
  • Prevention of further exposure to arsenic

If you think you may have been exposed to arsenic, it is important to seek medical attention immediately.