Continuing Education Activity

Acral erythema is also known as palmar-plantar erythrodysesthesia (PPE), palmoplantar erythrodysesthesia, hand-foot syndrome (HFS), or Burgdorf reaction. It is caused by classic chemotherapeutic agents and newer molecular-targeted therapies and is characterized by intense, painful erythema of the palms and soles that can progress to vesicles or bullae. This activity discusses the proper identification of the condition and adequate management and highlights the role of the interprofessional team in caring for patients with this condition.

Objectives:

• Identify the etiology of palmar-plantar erythrodysesthesia.
• Assess the exam findings typically seen in patients with palmar-plantar erythrodysesthesia.
• Evaluate the potential complications of palmar-plantar erythrodysesthesia.
• Communicate modalities to improve care coordination among interprofessional team members and improve outcomes for patients affected by palmar-plantar erythrodysesthesia.

Introduction

Acral erythema, also known as Palmar-plantar erythrodysesthesia (PPE), palmoplantar erythrodysesthesia, toxic erythema of the palms and soles, hand-foot syndrome (HFS), or Burgdorf reaction. Many classic chemotherapeutic agents and newer molecular-targeted therapies cause this adverse event. It is characterized by intense, painful erythema of the palms and soles that can progress to the formation of vesicles or bullae.[1][2][3] See Image. Chemotherapy Acral Erythema.

Etiology

Doxorubicin (most common with pegylated lysosomal preparation), cytarabine, docetaxel, capecitabine, or 5-fluorouracil (mostly infusional regimen) are the most frequently implicated agents.[1][4] Other drugs causing acral erythema are bleomycin, cisplatin, cyclophosphamide, daunorubicin, doxifluridine, etoposide, fludarabine, gemcitabine, hydroxyurea, idarubicin, ixabepilone, methotrexate, mitotane, paclitaxel, tegafur, thiotepa, and vinorelbine.[5][6][7][8] It is also postulated that genetic polymorphisms of enzymes involved in the metabolism of some fluoropyrimidines like Capecitabine are the culprit in developing PPE.[9] PPE seems dose-dependent, and peak drug concentration and total cumulative dose determine its occurrence. Drug formulation and administration schedules that result in sustained serum levels of cytotoxic agents are more frequently associated with acral erythema.[10][11][1] Multitargeted tyrosine kinase inhibitors and others that target angiogenesis are associated with hand-foot skin reactions (not discussed this topic). However, clinical and histologic patterns differ from the typical acral erythema that develops with standard cytotoxic agents.

Epidemiology

 The incidence of HFS is not well documented. However, the incidence of developing HFS in patients treated with capecitabine is around 60%.

Pathophysiology

Pathogenesis is not very well understood. Researchers think the accumulation of chemotherapeutic drugs in eccrine glands, which are more numerous in palms and soles, may cause eccrine squamous syringometaplasia (ESS). ESS is characterized by metaplasia and focal necrosis of the epithelium of the eccrine duct. ESS is occasionally detected with acral erythema, but such occurrences are relatively uncommon. Data suggests that Capecitabine (fluoropyrimidine) toxicity may be associated with genetic polymorphisms of dihydropyrimidine dehydrogenase and thymidylate synthase, enzymes involved in its metabolism.[9] Data also suggest that palmar skin has a high expression of capecitabine-activating enzyme thymidine phosphorylase, leading to a high concentration of active component levels.[12]

Histopathology

Histologic changes include dermatitis with necrotic and dyskeratotic keratinocytes, dermal edema, vacuolar degeneration, and perivascular lymphocytic infiltrate.[5] However, the biopsy is not usually done promptly for diagnostic purposes.

History and Physical

The condition typically begins with dysesthesias, like a tingling sensation in the palms or soles, and produces symmetric, well-demarcated painful erythema that can progress to blistering with desquamation, erosion, and ulceration. An especially severe bullous variant that advances to full-thickness epidermal necrosis and sloughing has been reported following cytarabine or high-dose intravenous methotrexate, particularly in children. Although rare, acral erythema involving the penis and scrotum has been reported. A presumed variant of acral erythema, fixed erythrodysesthesia plaque, is characteristic of intravenous injections of docetaxel. This lesion develops as a fixed, single plaque proximal to the infusion site, not including the palms or soles. It resolves with desquamation and leaves an area of hyperpigmented skin in 5 to 6 weeks. Temporary Loss of fingerprint is seen with capecitabine-associated, chronic acral erythema and can cause identification issues.

Evaluation

Painful red swelling of the feet and hands in a patient receiving chemotherapy suggests the diagnosis. A high degree of suspicion is the key to diagnosing patients receiving chemotherapeutic agents. The problem may also occur in patients with bone marrow transplants, as the clinical and histologic features may mimic cutaneous manifestations of graft-versus-host disease. Dangerous graft-versus-host disease must be differentiated from benign PPE. Graft-versus-host disease progresses to other body parts, whereas PPE is limited to hands and feet. Serial biopsies every 3 to 5 days may help differentiate the 2 disorders.[5]

Treatment / Management

The mainstay of treatment is the discontinuation of the drug and symptomatic treatment to provide pain relief, decrease edema, and prevent superinfection. Symptomatic treatment includes wound care, alcohol-free emollients, elevation, and pain medication. Healing includes superficial desquamation of affected areas. Often, chemotherapy dose intensity modification or reduction is needed if the drug cannot be discontinued or substituted for another cancer drug or treatment. Usually, it resolves within 2 to 4 weeks of drug cessation. In the case of severe (grade 3) acral erythema, further chemotherapy doses should be reduced to prevent a recurrence. Depending on overall clinical status, switching to an alternative regimen may be necessary if the risk of recurrence is high. 

Differential Diagnosis

The differential diagnosis for palmar-plantar erythrodysesthesia includes:

• Graft versus host disease
• Steven johnson syndrome
• Toxic epidermal necrolysis
• Fixed drug eruption

Treatment Planning

HFS is dose-related. The treatment for HFS is dose modification or drug interruption. HFS resolves within 2 to 4 weeks of discontinuation of chemotherapy. In patients who are getting capecitabine, topical urea 10% cream can be used to prevent HFS from capecitabine. For severe grade 3 HFS, subsequent doses of chemotherapy need to be reduced. 

Toxicity and Adverse Effect Management

Regional cooling using ice packs to wrists and ankles during therapy may help decrease the frequency and severity of symptoms by decreasing blood flow.[13][14] It is usually a well-tolerated prevention strategy. Randomized clinical trials using topical urea preparation on hands and feet revealed contradictory results depending on the dosage and duration of treatment in patients receiving capecitabine. Further studies need to validate the use in clinical practice.[15][16] Studies, including meta-analysis conducted using pyridoxine (vitamin B6), reveal varying results.[17][18][19] Oral Celecoxib 200 to 400 mg twice a day for 12 to 18 weeks significantly reduced the risk of grades 2 and 3 HFS (odds ratio 0.37, 95% CI 0.19-0.71) in a meta-analysis of randomized trials.[20] However, celecoxib is known for its potential cardiovascular adverse effects with long-term use and upper gastrointestinal risk of bleeding. The benefit-to-risk ratio is not favorable for the extensive use of celecoxib to prevent or treat HFS.[3] Studies using systemic corticosteroids in managing HFS are also not convincing, resulting in the need for large randomized clinical trials.[21]

Medical Oncology

Tyrosine kinase inhibitors like sunitinib, sorafenib, and bevacizumab, which target angiogenesis, are also associated with hand-foot skin reaction, which differs from HFS from conventional chemotherapy. Studies have shown that hand-foot skin reaction is associated with tumor response and survival.[22] Combined use of chemotherapy and TKI has increased in the recent past. It is crucial to differentiate the side effects between side effects from both agents to guide the reduction in the appropriate therapy if needed. HFS from cytotoxic chemotherapy causes diffuse erythema and desquamation compared to hyperkeratotic lesions in HSFR. 

Staging

According to the National Cancer Institute Common Terminology Criteria for Adverse Events (version 5), Grading of Severity of HFS is classified as follows:

• Grade 1: Minimal skin changes or dermatitis (eg, erythema or edema) without pain
• Grade 2: Skin changes (eg, peeling, blisters, bleeding, or hyperkeratosis) with pain leading to limitation of instrumental activities of daily living
• Grade 3: Severe skin changes (eg, peeling, blisters, bleeding, edema, or hyperkeratosis) with pain, limiting basic self-care activities of daily living [3]

Complications

PPE can significantly negatively impact a patient's quality of life. There are usually no long-term after-effects; however, palmoplantar keratoderma may develop as a result of long-standing acral erythema. Fingerprint loss is reversible after treatment discontinuation.

Enhancing Healthcare Team Outcomes

Acral erythema is also known as PPE, palmoplantar erythrodysesthesia, HFS, or Burgdorf reaction. Many classic chemotherapeutic agents and newer molecular-targeted therapies cause this adverse event. It is an intense, painful erythema of the palms and soles that can progress to the formation of vesicles or bullae. Healthcare professionals should be familiar with acral erythema while managing patients on chemotherapy. The condition is best managed by an interprofessional team that includes the dermatologist, oncologist, oncology nurse, pharmacist, and primary care provider. Patients and families must be educated about the condition and vigilant in monitoring the symptoms. When the condition is diagnosed, decisions regarding decreasing the dose or discontinuing treatment need to be made with shared decision-making depending on the overall clinical condition and severity of symptoms. Regional cooling with ice packs around wrists and ankles is a well-tolerated strategy with no side effects and should be tried. There is a need for large randomized controlled trials to formulate appropriate management options to treat the condition effectively. Overall, the quality of life is poor if the condition is not adequately treated.[5]

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References

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Disclosure: Anusha Chidharla declares no relevant financial relationships with ineligible companies.

Disclosure: Tejaswi Kanderi declares no relevant financial relationships with ineligible companies.

Disclosure: Anup Kasi declares no relevant financial relationships with ineligible companies.