Acute toxicity|Chronic toxicity


Acute toxicity

  • Acute toxicity describes the adverse effects of a substance that result either from a single exposure or from multiple exposures in a short period of time (usually less than 24 hours).
  • The adverse effects should occur within 14 days of the administration of the substance.

Treatments

When a person has been exposed to an acutely toxic dose of a substance, they can be treated in a number of ways in order to minimize the harmful effects.
  • Emergency showers used for removing irritating or hazardous chemicals from the skin.
  • Emergency eye washes used for removing any irritating or hazardous chemicals from the eyes.
  • Activated charcoal used to bind and remove harmful substances consumed orally.

Chronic toxicity

  • Chronic toxicity, the development of adverse effects as a result of long term exposure to a contaminant or other stressor.
  • The Chronic Toxicity may be lethal or sublethal.
  • Including changes in growth, reproduction, or behavior will occurs in chronic Toxicity.

Chronic Arsenic

Chronic arsenic occurs due to long term drinking of Arsenic contaminated water.

Different stages of Chronic Arsenic

The different stages of chronic arsenic are,

First Stage:


In first stage this symptoms are occurs –
  • Melanosis: Develop black and brown pigments on skin and feet.
  • Keratosis: Develop numerous small,rough,ton or red little bumps on cheeks, arms, thighs.
  • Vomiting,diarrhoea etc occurs.

Second Stage:

  • Leukomelanosis: develop small white and black pigments on skin.
  • liver and kidney become failure.

Third Stage:

  • Body parts started to spoilage.
  • develop cancer.
  • The effected pension will die.

Reference

  • https://en.wikipedia.org/wiki/Chronic_toxicity
  • https://en.wikipedia.org/wiki/Acute_toxicity

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