According to the NHS website, symptoms may not appear until up to eight weeks after initial infection, as the body requires ...

Topical permethrin should be applied every two to three days for up to two weeks. What it looks like: Drug rashes are usually speckled, itchy, and red, and can cover large areas of skin.

Permethrin will kill or stun insects touching the treated ... Do not apply repellent to cuts, wounds or irritated skin. After returning indoors, wash treated skin with soap and water. Do not spray ...