255.3 📌 章末速記

255.3.0.0.1 Scabies

• Sarcoptes scabiei; finger webs + nocturnal pruritus + burrows + scrotum
• Norwegian = immunocompromise massive
• Permethrin 5% cream or ivermectin PO × 2; treat all contacts

255.3.0.0.2 Lice

• Head + body + pubic
• Body lice = vector for typhus + trench fever + LBRF
• Permethrin / pyrethrin / malathion / ivermectin

255.3.0.0.3 Bedbugs

• Cimex; clustered pruritic papules
• Travel + hotels
• Not vectors
• Anti-itch + pest control

255.3.0.0.4 Myiasis

• Fly larvae; vaseline occlusion or surgical extraction

255.3.0.0.5 Tungiasis

• Sand flea toe burrow; extraction

255.3.0.0.6 Ticks (Ch 185, 186, 187, 188)

• Lyme + RMSF + Babesia + Ehrlichia + Anaplasma + Powassan + tularemia

255.3.0.0.7 盧醫師 hint

• Nocturnal pruritus + finger web rash + family affected → scabies (permethrin / ivermectin)
• Immunocompromise + thick crusted skin lesions → Norwegian scabies (ivermectin + permethrin combination)
• Travel returnee + linear bite pattern → bedbugs (environmental control)
• Pubic itching + sexual contact → pubic lice (permethrin); also screen for STIs

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