Repellents with higher concentration may last longer but are not more effective; against ticks, 20% picaridin may work for 8 hours vs. 55–98.11% DEET for 5–6 hours or 30–40% OLE for 6 hours. Repellents should not be used under clothes, on eyes, mouth, wounds or cuts, or on babies younger than 2 months (3 years for OLE or PMD). If sunscreen is used, repellent should be applied on top of it. Repellents should not be sprayed directly on a face, but should instead be sprayed on a hand and then rubbed on the face.After coming indoors, clothes, gear and pets should be checked for ticks. Clothes can be put into a hot dryer for 10 minutes to kill ticks (just washing or warm dryer are not enough). Showering as soon as possible, looking for ticks over the entire body, and removing them reduce risk of infection. Unfed tick nymphs are the size of a poppy seed, but a day or two after biting and attaching themselves to a person, they look like a small blood blister. The following areas should be checked especially carefully: armpits, between legs, back of knee, bellybutton, trunk, and in children ears, neck and hair. Tick removal
Attached ticks should be removed promptly. Risk of infection increases with time of attachment, but in North America risk of Lyme disease is small if the tick is removed within 36 hours.
Erythema gyratum repens  is a figurate erythema that is rapidly moving and usually a marker of underlying cancer,: 143  usually from the lung. See also
Annular erythema of infancy
List of cutaneous conditions
List of cutaneous conditions associated with internal malignancy
List of migrating cutaneous conditions

References
Further reading
Prouty, Megan; Liu, Deede (2019). "Erythema Gyratum Repens Associated with Anal Cancer". New England Journal of Medicine. 380 (3): e3. doi:10.1056/NEJMicm1805833. ISSN 0028-4793. PMID 30650327. Illustration of the condition


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