Symptoms

Symptoms of scabies appear about 4 to 8 weeks after infection in a child or adult who has never had scabies before. A child or adult who has been infected before will have symptoms much sooner, in 1 to 4 days. Signs of scabies infection may include:

• Intense itching, especially at night or after a hot bath

• Skin irritations that look like hives, insect bites, pimples, or blisters, especially on warmer areas of the body, such as between the fingers, in the armpits, and in the creases of the wrists, elbows, and knees

• Sores on the body caused by scratching. The sores may become infected.

• Burrows created by mites traveling under the skin. These look like lines on the skin’s surface.

Treating scabies infection

Scabies infections are usually treated with a prescription lotion that kills the mites. The lotion must be applied to the entire body from the neck down. This includes the palms of the hands, soles of the feet, groin, and under the fingernails. The lotion must be left on for 8 to 14 hours or as prescribed. The lotion is often used at night before bed and then washed off the next morning. In some cases, the child or adult may need a second application of lotion a week after the first. Medicines work quickly to kill the mites, but most children and adults continue to have an itchy reaction to the bites they've already gotten for several weeks after treatment. Marks on the skin from scabies usually go away in 1 to 2 weeks, but sometimes they take a few months. If the skin creams don't work, the child or adult may need to take medicine by mouth (orally).

Preventing the spread of the infection

To prevent spread of infection, wash clothing, linens, and toys in very hot water.

To prevent reinfection and the spread of scabies to others, follow these instructions:

• Wash the infected person’s clothing, towels, bed linens, cloth toys, and other personal items in very hot, soapy water. Dry them thoroughly in a dryer set on hot. If an item cannot be laundered, have the item dry cleaned. Don't share items among family members. 

• Seal items that can’t be washed in plastic bags for at least 3 days and possibly up to 1 week.

• Vacuum floors and furniture. Throw the vacuum bag away afterward.

• Tell an infected child’s school and caregivers so that other children can be checked and treated.

• Keep an infected child home from daycare or school until the morning after treatment for scabies.

• Warn children not to share items such as clothing and towels with other children.

• Be aware that all household members who may have been exposed to scabies may need to be treated, even if they don't have symptoms. Talk with your healthcare provider.

• Don't spray your house with chemicals or pesticides. These can be dangerous to your family’s health.

 When to call your healthcare provider

Call your healthcare provider right away if you or a family member has any of these:

• Fever of 100.4°F (38°C) or higher, or as directed by your provider

• Red streaks, pain, or swelling of the skin

• Yellow or brown crusts or drainage from the sores

• Sores that get worse or do not heal

• New rashes appear or itching continues for more than 2 weeks after treatment