As the outermost and largest organ of the human body, skin is often invaded by various insects and parasites.
- Insect bite reaction (Papular urticaria)
- Bites of various insects, ticks, fleas and mites
- Mite infestation
- Scabies (Sarcoptes scabiei)
- Trombiculid mites (chiggers)
- Louse infestation
- Pediculosis capitis (Head louse), pediculosis corporis (body louse), phthiriasis pubis (pubic louse)
- Larva infestation
- Cutaneous larva migrans (creeping eruption due to hookworm larva)
- Cutaneous myiasis (fly larva)
- Flea infestation
- Tungiasis (Tunga penetrans)