الدَّاء العُلْقِي (اليُؤَاز)

Overview

Yaws is a chronic infectious disease caused by the bacterium Treponema pallidum pertenue. It mainly affects the skin, bones, and joints and is most common in children living in warm, tropical regions.

Yaws spreads through direct skin contact with infected lesions. Although it is not life-threatening in early stages, untreated cases can lead to severe deformities. Early diagnosis and antibiotic treatment can completely cure the disease.

Types of Yaws

• Primary Yaws: Initial skin lesion (papilloma) at infection site
• Secondary Yaws: Multiple skin lesions and systemic spread
• Latent Yaws: No visible symptoms but infection remains
• Tertiary Yaws: Advanced stage with bone and tissue damage

Symptoms of Yaws

• Painless skin sores or ulcers
• Raised, wart-like lesions
• Skin thickening
• Swelling of bones or joints
• Pain in affected areas
• Deformities in advanced stages

Causes of Yaws

• Infection with Treponema pallidum pertenue
• Direct skin-to-skin contact with infected person
• Poor hygiene and overcrowded living conditions

Complications of Yaws

• Bone deformities
• Joint damage
• Chronic ulcers
• Disability in severe cases
• Social and psychological impact

Risk Factors of Yaws

• Living in tropical regions
• Poor sanitation and hygiene
• Close contact with infected individuals
• Children (most commonly affected)

Prevention of Yaws

• Maintaining good hygiene
• Avoiding direct contact with infected lesions
• Early diagnosis and treatment
• Community health programs
• Improving sanitation