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Thus inflammatory and degenerative changes dominate the condition. Pathogenesis involving infective origin or allergic origin may be included. Diseases such as Lyme disease may be included. Expanding redness known as erythema migrans begins at the site of bite after a period of one week. There is no much itching i.e. ''alpa kandu'' but the rash is red and warm but generally painless. Classically the innermost portion remain darker red and becomes indurated (is thicker and firmer).
 
Thus inflammatory and degenerative changes dominate the condition. Pathogenesis involving infective origin or allergic origin may be included. Diseases such as Lyme disease may be included. Expanding redness known as erythema migrans begins at the site of bite after a period of one week. There is no much itching i.e. ''alpa kandu'' but the rash is red and warm but generally painless. Classically the innermost portion remain darker red and becomes indurated (is thicker and firmer).
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===== 5. Pundarika kushtha =====
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===== 5. ''Pundarika kushtha'' =====
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It is dominated by pitta and kapha. Pitta is responsible for redness, burning sensation, pāka, pus formation whereas kapha is responsible for whitish nature, itching and kr̥mi.
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It is dominated by ''pitta'' and ''kapha''. ''Pitta'' is responsible for redness, burning sensation, pāka, pus formation whereas ''kapha'' is responsible for whitish nature, itching and ''krimi''.
Primary lesion manifest as “rakta rāji sirā santata utsedavanti” i.e. vessel are inflamed and are palpable. Systemic vasculitis may affect the skin and vascular damage may be the main feature in several skin diseases. The histological features that are common are:- Vessel wall damage , red cell extravasation , invasion of inflammatory cells into vessel walls.  
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Primary lesion manifest as ''rakta rāji sirā santata utsedavanti'' i.e. vessel are inflamed and are palpable. Systemic vasculitis may affect the skin and vascular damage may be the main feature in several skin diseases. The histological features that are common are:- vessel wall damage , red cell extravasation , invasion of inflammatory cells into vessel walls.
    
===== 6. Sidhma kushtha =====
 
===== 6. Sidhma kushtha =====