What disease causes the sensation of bugs crawling under the skin?

Skin diseases associated with parasites mainly include scabies, mite dermatitis, lice infestations, myiasis, and cutaneous filariasis. These are mostly caused by parasitic infections or invasion of the skin by insects or larvae, and commonly present symptoms such as itching and rashes. If skin ulceration, severe pain, or systemic fever occurs, prompt medical attention is recommended.

1. Scabies: Caused by infestation of the skin with Sarcoptes scabiei mites, commonly affecting skin folds such as between fingers and in the armpits. It presents as tiny papules or vesicles the size of a needle tip, with intensified itching at night. The condition is contagious through direct contact and requires targeted antiparasitic treatment.

2. Mite dermatitis: Triggered by mite bites or contact with their secretions, this condition causes redness, papules, and itching, typically appearing on exposed areas of skin. It is often associated with damp environments and poor hygiene. Management includes environmental cleaning and symptomatic relief for itching.

3. Pediculosis (Lice infestations): Classified into head lice, body lice, and pubic lice, which infest the scalp, clothing, and genital area respectively. Bites result in itching and red papules, and transmission occurs via close contact. Treatment involves shaving affected hair and using appropriate antiparasitic medications.

4. Myiasis: Caused by fly larvae invading skin tissue, usually occurring in wounds or broken skin. Symptoms include local swelling, pain, and a sensation of larval movement. Prompt removal of larvae and anti-infective treatment are necessary.

5. Cutaneous filariasis: Caused by filarial larvae invading lymphatic vessels in the skin, leading to lymphangitis and lymphadenopathy. Affected skin may show redness, swelling, pain, or develop elephantiasis. Transmission primarily occurs through mosquito bites.

Daily prevention includes maintaining clean and dry skin, frequently changing and sun-drying clothes, avoiding unclean environments and potential sources of infection, taking protective measures against insects, promptly evaluating any skin abnormalities, and refraining from scratching to prevent secondary infections.