Diagnosis: Chilblains (perniosis)
A 28-year-old woman presents with tender, violaceous toes following a recent cold snap. She reports a history of similar episodes triggered by cold exposure, with associated swelling and discomfort. Examination reveals erythematous, edematous lesions on the toes, consistent with a diagnosis of chilblains.
A 28-year-old female presents with a 1-week history of painful, violaceous toes following exposure to cold weather. She describes the lesions as tender and swollen, primarily affecting her distal digits. On examination, notable findings include:Violaceous discoloration of the toes, particularly the first and second digits.Edema and tenderness upon palpation.No ulceration or necrosis present.Symmetrical lesions affecting both feet.Normal nail and skin integrity elsewhere.
The patient reports that the lesions began 2 days after a significant drop in temperature, with symptoms worsening during subsequent cold exposure. She has experienced similar episodes sporadically for the past few years, particularly in winter months. She denies any history of vascular disease or autoimmune disorders. Previous treatments included topical corticosteroids, which provided minimal relief. There is no significant family history of similar conditions. Relevant aspects of her social history include frequent outdoor activities in cold weather.Onset: Symptoms began after recent cold exposure.Triggers: Cold temperatures are a consistent trigger for her episodes.Prior treatments: Topical corticosteroids with limited effectiveness.Past medical history: No known vascular or autoimmune disorders.Family history: No known relatives with similar symptoms.Social history: Engages in outdoor activities during winter.
Acute / First-Line ManagementWarming measures: Immediate rewarming of affected areas using warm (not hot) water or blankets.Topical corticosteroids: Application of a medium-potency corticosteroid (e.g., betamethasone 0.1% cream) twice daily to reduce inflammation.Oral NSAIDs: Ibuprofen 400 mg every 8 hours as needed for pain relief.Workup and Diagnostic ConfirmationClinical diagnosis: Diagnosis is primarily clinical based on history and physical examination.Laboratory tests: Blood tests may be performed to rule out underlying conditions (e.g., lupus, Raynaud's phenomenon).Imaging studies: Doppler ultrasound may be considered if vascular compromise is suspected.Long-Term ManagementPreventive measures: Advise patients to avoid cold exposure and wear warm, insulated footwear.Topical agents: Consider using topical vasodilators (e.g., nifedipine ointment) in recurrent cases.Oral medications: In recurrent or severe cases, oral calcium channel blockers (e.g., nifedipine 30 mg/day) may be beneficial.Patient education: Educate on the nature of the condition and the importance of preventive care.
Raynaud's phenomenon: Characterized by episodic ischemia of digits due to vasospasm, often triggered by cold or stress; typically presents with pallor followed by cyanosis and erythema.Acrocyanosis: Presents with persistent blue discoloration of the hands and feet, often without pain; usually occurs in young women and is exacerbated by cold.Vasculitis: Systemic vasculitides can cause similar symptoms, often associated with systemic symptoms and lab findings indicating inflammation.Thromboangiitis obliterans (Buerger’s disease): Affects young male smokers, characterized by claudication and ischemic changes in fingers and toes.Cold urticaria: Presents with whealing and pruritus upon cold exposure, rather than ischemic changes.Frostbite: Severe cold injury leading to tissue necrosis, often with blister formation and potential loss of digits.Peripheral artery disease: Can cause ischemic changes, but typically associated with risk factors like smoking and diabetes; may present with claudication.Dermatitis herpetiformis: Presents with vesicular lesions on extensor surfaces, often associated with gluten sensitivity; can be confused with chilblains due to blistering in cold.
High-Yield PearlsCold exposure: Chilblains are primarily triggered by cold temperatures, leading to painful, erythematous lesions on digits.Clinical diagnosis: Diagnosis is made clinically; laboratory tests are typically not necessary unless underlying conditions are suspected.Symmetry: Lesions are usually symmetrical, affecting the same digits on both feet.Management: Immediate rewarming and topical corticosteroids are first-line treatments for acute episodes.Prevention: Education on preventing cold exposure is crucial for long-term management and reducing recurrence.Chilblains are a common yet often overlooked condition exacerbated by cold exposure, necessitating prompt management to alleviate symptoms and prevent recurrence.
Tags: chilblains, perniosis