Tics can be classified as motor or vocal. Motor tics are associated with movements, while vocal tics are associated with sound. Tics can also be categorized as simple or complex. Simple motor tics involve only a few muscles usually restricted to a specific body part. They can be clonic (abrupt in onset and rapid), tonic (isometric contraction of the involved body part) or dystonic (sustained abnormal posture).
Bed bug bites are not initially painful and can go unnoticed for hours or days. This allows bed bugs to withdraw human blood for up to 10 minutes with each feeding. Bed bug bites occur most commonly on exposed skin, such as the upper body, neck, arms and shoulders. Bite Symptoms.
Bites on the skin are a poor indicator of a bed bug infestation. Bed bug bites can look like bites from other insects (such as mosquitoes or chiggers), rashes (such as eczema or fungal infections), or even hives. Some people do not react to bed bug bites at all. On this page: Looking for signs of bed bugs; Where bed bugs hide; Bed bug behavior and habits