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Acrodynia

Updated : May 14, 2023





Background

Acrodynia, also known as pink disease, is a rare condition that affects infants and young children. It is characterized by a variety of symptoms, including pink discoloration of the hands and feet, irritability, anorexia, and sweating.

The condition was first described in the late 19th century, when it was associated with the use of calomel, a mercury-containing medication that was commonly used at the time to treat various conditions.

Today, acrodynia is rare, and it is most often associated with exposure to mercury in the environment or through the use of certain products, such as mercury-containing skin creams or teething powders. Other causes of acrodynia may include viral infections, autoimmune disorders, or certain medications.

Epidemiology

Acrodynia is a rare condition, and its precise incidence and prevalence are not well established. The condition was more commonly reported in the late 19th and early 20th centuries when it was associated with the use of mercury-containing medications. However, with the discontinuation of these medications and the implementation of regulations to limit mercury exposure in the environment, the incidence of acrodynia has declined.

Today, acrodynia is most often associated with exposure to mercury through the use of certain products, such as mercury-containing skin creams or teething powders. The condition may also occur as a result of exposure to other environmental toxins, viral infections, autoimmune disorders, or certain medications.

Acrodynia is more commonly reported in infants and young children, who may be more vulnerable to the effects of mercury and other toxins. Boys may be more commonly affected than girls, and there may be some genetic factors that increase the risk of developing the condition. However, the overall incidence and prevalence of acrodynia remain relatively low, and the condition is considered to be rare.

Anatomy

Pathophysiology

The exact pathophysiology of acrodynia is not well understood, but it is believed to involve an inflammatory reaction to mercury or other environmental toxins, which can lead to the characteristic symptoms. Mercury is a toxic heavy metal that can accumulate in the body over time. It can affect various organ systems, including the central nervous system, the cardiovascular system, and the immune system.

In acrodynia, exposure to mercury or other toxins triggers an inflammatory response, which can cause damage to blood vessels, nerves, and other tissues. The specific mechanisms by which mercury causes this inflammatory response are not fully understood. It is believed that mercury may bind to certain proteins and enzymes in the body, disrupting normal cellular processes and triggering an immune response.

The inflammatory response can cause a range of symptoms, including pink discoloration of the hands and feet, irritability, anorexia, and sweating. In addition to mercury, other environmental toxins, viral infections, autoimmune disorders, and certain medications may also trigger an inflammatory response and lead to symptoms of acrodynia. The precise pathophysiology of these other causes of acrodynia may vary depending on the underlying condition or exposure.

Etiology

The etiology of acrodynia is typically related to exposure to mercury or other environmental toxins, although the condition may also be associated with viral infections, autoimmune disorders, or certain medications. Historically, acrodynia was associated with the use of mercury-containing medications, such as calomel, which was used to treat a range of conditions in the late 19th and early 20th centuries. Today, mercury exposure is more commonly associated with the use of certain products, such as skin creams, cosmetics, or teething powders, which may contain mercury or other toxic substances.

Other environmental toxins, such as lead or cadmium, may also trigger symptoms of acrodynia. Exposure to these toxins may occur through contaminated food or water, or through contact with contaminated soil or air. Viral infections, such as coxsackievirus or echovirus, may also trigger symptoms of acrodynia. The precise mechanism by which these infections cause acrodynia is not well understood, but it is believed to involve an immune-mediated reaction to the virus.

Autoimmune disorders, such as lupus or Kawasaki disease, may also be associated with symptoms of acrodynia. In these cases, the immune system may mistakenly attack normal body tissues, causing inflammation and damage. Certain medications, such as antibiotics or antipsychotic drugs, may also cause symptoms of acrodynia as a side effect. The precise mechanism by which these medications cause acrodynia may vary depending on the specific drug and its effects on the body.

Genetics

Prognostic Factors

The prognosis of acrodynia can vary depending on the severity and duration of the exposure to the toxic agent, as well as the effectiveness of treatment. If the toxic agent is identified and removed early, the prognosis for recovery is generally good.

However, if the exposure is prolonged or if the diagnosis and treatment are delayed, the patient may experience long-term complications, such as peripheral neuropathy or other neurological deficits.

Children who develop acrodynia may be at increased risk for developmental delays or learning disabilities, particularly if the condition is not recognized and treated promptly. In some cases, children may require ongoing monitoring and support to manage these complications.

Clinical History

Clinical history

The clinical history of acrodynia can vary depending on the severity and duration of the symptoms. In many cases, the symptoms may develop gradually over time, and may include the following:

Pain and swelling in the hands and feet: This is one of the hallmark symptoms of acrodynia. The affected areas may also feel warm to the touch.

Skin changes: The skin on the hands and feet may appear red, shiny, and swollen. In some cases, the skin may also become scaly or blistered.

Sensitivity to cold: People with acrodynia may experience increased sensitivity to cold temperatures, and may feel pain or discomfort when exposed to cold air or water.

Irritability and other behavioral changes: Children with acrodynia may become irritable, fussy, or difficult to console. They may also have difficulty sleeping or eating.

Gum inflammation: Some people with acrodynia may develop inflammation and bleeding of the gums, which can be a sign of mercury toxicity.

Other symptoms: Depending on the severity of the condition, other symptoms may also be present, such as fever, headache, fatigue, or joint pain.

Physical Examination

Physical examination

During a physical examination for acrodynia, the healthcare provider will typically evaluate the affected areas, such as the hands and feet, to look for signs of swelling, redness, and skin changes. The provider may also check for other symptoms, such as gum inflammation or irritability.

Some specific findings that may be observed during a physical examination for acrodynia include:

Erythema and edema: The skin on the hands and feet may appear red, shiny, and swollen, with areas of discoloration or petechiae (tiny red spots).

Pain on palpation: The affected areas may be tender to the touch, and the patient may experience pain or discomfort with pressure or movement.

Peripheral neuropathy: In some cases, patients with acrodynia may have evidence of peripheral neuropathy, such as numbness, tingling, or weakness in the hands and feet.

Irritability or other behavioral changes: Children with acrodynia may appear irritable, fussy, or difficult to console.

Gum inflammation: Some patients with acrodynia may have inflammation and bleeding of the gums, which can be a sign of mercury toxicity.

Age group

Associated comorbidity

Associated activity

Acuity of presentation

Differential Diagnoses

Differential diagnosis

The symptoms of acrodynia can be similar to those of other conditions, so a differential diagnosis may be necessary to rule out other possible causes. Some conditions that may be considered in the differential diagnosis of acrodynia include:

Raynaud’s disease: This is a condition characterized by spasms in the blood vessels of the hands and feet, which can cause pain and color changes similar to those seen in acrodynia.

Erythromelalgia: This is a rare disorder that causes burning pain, redness, and warmth in the hands and feet.

Peripheral neuropathy: This is a condition that affects the nerves in the hands and feet, causing symptoms such as numbness, tingling, and pain.

Toxic shock syndrome: This is a rare but serious condition that can be caused by certain bacterial infections, and is characterized by fever, low blood pressure, and a rash that may involve the hands and feet.

Lupus erythematosus: This is an autoimmune disorder that can cause a range of symptoms, including joint pain, skin rash, and fatigue. In some cases, it may also cause symptoms similar to those seen in acrodynia.

Kawasaki disease: This is a rare childhood illness that causes inflammation in the blood vessels, and can cause symptoms such as fever, rash, and swelling of the hands and feet.

Drug reactions: Some medications can cause skin changes and other symptoms similar to those seen in acrodynia.

Laboratory Studies

Imaging Studies

Procedures

Histologic Findings

Staging

Treatment Paradigm

The primary treatment for acrodynia is to remove the source of exposure to the toxic agent, such as mercury or other heavy metals. In cases of mercury toxicity, this may involve removing sources of mercury from the patient’s environment, such as dental amalgam fillings, certain fish or seafood, or other potential sources of exposure.

If the patient has severe symptoms, such as pain or swelling in the hands and feet, medications such as nonsteroidal anti-inflammatory drugs (NSAIDs) or corticosteroids may be prescribed to manage symptoms and reduce inflammation.

Other supportive measures may include:

Rest and elevation: Elevating the affected limbs can help reduce swelling and pain.

Cool compresses: Applying cool compresses to the affected areas may help reduce pain and inflammation.

Nutritional support: In cases of severe mercury toxicity, the patient may require nutritional support, such as intravenous fluids or total parenteral nutrition (TPN).

Symptomatic treatment: Other medications or treatments may be used to manage specific symptoms, such as anti-anxiety medications for irritability or sleep aids for insomnia.

In some cases, patients with acrodynia may require long-term follow-up to monitor for complications or ongoing symptoms related to mercury toxicity. Additionally, patients may need to make lifestyle changes, such as avoiding certain foods or occupational exposures, to reduce the risk of recurrent exposure and prevent further complications.

by Stage

by Modality

Chemotherapy

Radiation Therapy

Surgical Interventions

Hormone Therapy

Immunotherapy

Hyperthermia

Photodynamic Therapy

Stem Cell Transplant

Targeted Therapy

Palliative Care

Medication

Media Gallary

References

https://www.ncbi.nlm.nih.gov/books/NBK559114/

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Acrodynia

Updated : May 14, 2023




Acrodynia, also known as pink disease, is a rare condition that affects infants and young children. It is characterized by a variety of symptoms, including pink discoloration of the hands and feet, irritability, anorexia, and sweating.

The condition was first described in the late 19th century, when it was associated with the use of calomel, a mercury-containing medication that was commonly used at the time to treat various conditions.

Today, acrodynia is rare, and it is most often associated with exposure to mercury in the environment or through the use of certain products, such as mercury-containing skin creams or teething powders. Other causes of acrodynia may include viral infections, autoimmune disorders, or certain medications.

Acrodynia is a rare condition, and its precise incidence and prevalence are not well established. The condition was more commonly reported in the late 19th and early 20th centuries when it was associated with the use of mercury-containing medications. However, with the discontinuation of these medications and the implementation of regulations to limit mercury exposure in the environment, the incidence of acrodynia has declined.

Today, acrodynia is most often associated with exposure to mercury through the use of certain products, such as mercury-containing skin creams or teething powders. The condition may also occur as a result of exposure to other environmental toxins, viral infections, autoimmune disorders, or certain medications.

Acrodynia is more commonly reported in infants and young children, who may be more vulnerable to the effects of mercury and other toxins. Boys may be more commonly affected than girls, and there may be some genetic factors that increase the risk of developing the condition. However, the overall incidence and prevalence of acrodynia remain relatively low, and the condition is considered to be rare.

The exact pathophysiology of acrodynia is not well understood, but it is believed to involve an inflammatory reaction to mercury or other environmental toxins, which can lead to the characteristic symptoms. Mercury is a toxic heavy metal that can accumulate in the body over time. It can affect various organ systems, including the central nervous system, the cardiovascular system, and the immune system.

In acrodynia, exposure to mercury or other toxins triggers an inflammatory response, which can cause damage to blood vessels, nerves, and other tissues. The specific mechanisms by which mercury causes this inflammatory response are not fully understood. It is believed that mercury may bind to certain proteins and enzymes in the body, disrupting normal cellular processes and triggering an immune response.

The inflammatory response can cause a range of symptoms, including pink discoloration of the hands and feet, irritability, anorexia, and sweating. In addition to mercury, other environmental toxins, viral infections, autoimmune disorders, and certain medications may also trigger an inflammatory response and lead to symptoms of acrodynia. The precise pathophysiology of these other causes of acrodynia may vary depending on the underlying condition or exposure.

The etiology of acrodynia is typically related to exposure to mercury or other environmental toxins, although the condition may also be associated with viral infections, autoimmune disorders, or certain medications. Historically, acrodynia was associated with the use of mercury-containing medications, such as calomel, which was used to treat a range of conditions in the late 19th and early 20th centuries. Today, mercury exposure is more commonly associated with the use of certain products, such as skin creams, cosmetics, or teething powders, which may contain mercury or other toxic substances.

Other environmental toxins, such as lead or cadmium, may also trigger symptoms of acrodynia. Exposure to these toxins may occur through contaminated food or water, or through contact with contaminated soil or air. Viral infections, such as coxsackievirus or echovirus, may also trigger symptoms of acrodynia. The precise mechanism by which these infections cause acrodynia is not well understood, but it is believed to involve an immune-mediated reaction to the virus.

Autoimmune disorders, such as lupus or Kawasaki disease, may also be associated with symptoms of acrodynia. In these cases, the immune system may mistakenly attack normal body tissues, causing inflammation and damage. Certain medications, such as antibiotics or antipsychotic drugs, may also cause symptoms of acrodynia as a side effect. The precise mechanism by which these medications cause acrodynia may vary depending on the specific drug and its effects on the body.

The prognosis of acrodynia can vary depending on the severity and duration of the exposure to the toxic agent, as well as the effectiveness of treatment. If the toxic agent is identified and removed early, the prognosis for recovery is generally good.

However, if the exposure is prolonged or if the diagnosis and treatment are delayed, the patient may experience long-term complications, such as peripheral neuropathy or other neurological deficits.

Children who develop acrodynia may be at increased risk for developmental delays or learning disabilities, particularly if the condition is not recognized and treated promptly. In some cases, children may require ongoing monitoring and support to manage these complications.

Clinical history

The clinical history of acrodynia can vary depending on the severity and duration of the symptoms. In many cases, the symptoms may develop gradually over time, and may include the following:

Pain and swelling in the hands and feet: This is one of the hallmark symptoms of acrodynia. The affected areas may also feel warm to the touch.

Skin changes: The skin on the hands and feet may appear red, shiny, and swollen. In some cases, the skin may also become scaly or blistered.

Sensitivity to cold: People with acrodynia may experience increased sensitivity to cold temperatures, and may feel pain or discomfort when exposed to cold air or water.

Irritability and other behavioral changes: Children with acrodynia may become irritable, fussy, or difficult to console. They may also have difficulty sleeping or eating.

Gum inflammation: Some people with acrodynia may develop inflammation and bleeding of the gums, which can be a sign of mercury toxicity.

Other symptoms: Depending on the severity of the condition, other symptoms may also be present, such as fever, headache, fatigue, or joint pain.

Physical examination

During a physical examination for acrodynia, the healthcare provider will typically evaluate the affected areas, such as the hands and feet, to look for signs of swelling, redness, and skin changes. The provider may also check for other symptoms, such as gum inflammation or irritability.

Some specific findings that may be observed during a physical examination for acrodynia include:

Erythema and edema: The skin on the hands and feet may appear red, shiny, and swollen, with areas of discoloration or petechiae (tiny red spots).

Pain on palpation: The affected areas may be tender to the touch, and the patient may experience pain or discomfort with pressure or movement.

Peripheral neuropathy: In some cases, patients with acrodynia may have evidence of peripheral neuropathy, such as numbness, tingling, or weakness in the hands and feet.

Irritability or other behavioral changes: Children with acrodynia may appear irritable, fussy, or difficult to console.

Gum inflammation: Some patients with acrodynia may have inflammation and bleeding of the gums, which can be a sign of mercury toxicity.

Differential diagnosis

The symptoms of acrodynia can be similar to those of other conditions, so a differential diagnosis may be necessary to rule out other possible causes. Some conditions that may be considered in the differential diagnosis of acrodynia include:

Raynaud’s disease: This is a condition characterized by spasms in the blood vessels of the hands and feet, which can cause pain and color changes similar to those seen in acrodynia.

Erythromelalgia: This is a rare disorder that causes burning pain, redness, and warmth in the hands and feet.

Peripheral neuropathy: This is a condition that affects the nerves in the hands and feet, causing symptoms such as numbness, tingling, and pain.

Toxic shock syndrome: This is a rare but serious condition that can be caused by certain bacterial infections, and is characterized by fever, low blood pressure, and a rash that may involve the hands and feet.

Lupus erythematosus: This is an autoimmune disorder that can cause a range of symptoms, including joint pain, skin rash, and fatigue. In some cases, it may also cause symptoms similar to those seen in acrodynia.

Kawasaki disease: This is a rare childhood illness that causes inflammation in the blood vessels, and can cause symptoms such as fever, rash, and swelling of the hands and feet.

Drug reactions: Some medications can cause skin changes and other symptoms similar to those seen in acrodynia.

The primary treatment for acrodynia is to remove the source of exposure to the toxic agent, such as mercury or other heavy metals. In cases of mercury toxicity, this may involve removing sources of mercury from the patient’s environment, such as dental amalgam fillings, certain fish or seafood, or other potential sources of exposure.

If the patient has severe symptoms, such as pain or swelling in the hands and feet, medications such as nonsteroidal anti-inflammatory drugs (NSAIDs) or corticosteroids may be prescribed to manage symptoms and reduce inflammation.

Other supportive measures may include:

Rest and elevation: Elevating the affected limbs can help reduce swelling and pain.

Cool compresses: Applying cool compresses to the affected areas may help reduce pain and inflammation.

Nutritional support: In cases of severe mercury toxicity, the patient may require nutritional support, such as intravenous fluids or total parenteral nutrition (TPN).

Symptomatic treatment: Other medications or treatments may be used to manage specific symptoms, such as anti-anxiety medications for irritability or sleep aids for insomnia.

In some cases, patients with acrodynia may require long-term follow-up to monitor for complications or ongoing symptoms related to mercury toxicity. Additionally, patients may need to make lifestyle changes, such as avoiding certain foods or occupational exposures, to reduce the risk of recurrent exposure and prevent further complications.

https://www.ncbi.nlm.nih.gov/books/NBK559114/

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