Alloknesis is an abnormal sensory state where stimuli that do not ordinarily evoke

itch Itch (also known as pruritus) is a sensation that causes the desire or reflex to scratch. Itch has resisted many attempts to be classified as any one type of sensory experience. Itch has many similarities to pain, and while both are unpleasant ...

(such as the light touch of clothing) cause itch.

References

Symptoms and signs of mental disorders {{dermatology-stub