L90.4

Clinical Causes: Chronic infection with Borrelia burgdorferi bacteria, which is transmitted through tick bites. Prolonged or untreated Lyme disease that progresses to involve the skin. Potential genetic or immune system factors that influence disease progression.

Key Symptoms: Persistent skin discoloration, often bluish or reddish in color. Thinning and atrophy of the skin, leading to a shiny or stretched appearance. Swelling and hardening of the affected areas. Loss of hair or pigmentation in localized skin patches. Possible nerve involvement causing numbness or tingling sensations. Progressive changes over months or years, with symptoms worsening gradually.

Diagnosis Path: Diagnosis typically involves a combination of clinical examination and medical history. Physicians may analyze skin lesions, look for signs consistent with chronic Lyme disease, and run laboratory tests. These tests can include serological assays to detect antibodies against Borrelia burgdorferi and, in some cases, skin biopsies to observe characteristic tissue changes. Early and accurate diagnosis can assist in managing the condition more effectively.

Treatment Protocols: Treatment primarily focuses on the antibiotic therapy targeted at eradicating Borrelia bacteria, usually involving doxycycline or other appropriate antibiotics. The length and intensity of treatment depend on the severity and duration of symptoms. Supportive measures, such as skin care to prevent infections and manage symptoms, may also be recommended. In some cases, additional therapies may be considered to address nerve involvement or skin damage. Ongoing medical evaluation is essential to monitor progress and prevent further skin deterioration.