Lacunar stroke or lacunar cerebral infarct (LACI) is the most common type of ischemic stroke, resulting from the occlusion of small penetrating arteries that provide blood to the brains deep structures. Patients who present with symptoms of a lacunar stroke, but who have not yet had diagnostic imaging performed, may be described as having lacunar stroke syndrome (LACS). Much of the current knowledge of lacunar strokes comes from C. Miller Fishers cadaver dissections of post-mortem stroke patients. He observed "lacunae" (empty spaces) in the deep brain structures after occlusion of 200–800 μm penetrating arteries and connected them with five classic syndromes. These syndromes are still noted today, though lacunar infarcts are diagnosed based on clinical judgment and radiologic imaging. Signs and symptoms
Each of the five classical lacunar syndromes has a relatively distinct symptom complex. Symptoms may occur suddenly, progressively, or in a fluctuating (e.g., the capsular warning syndrome) manner. Occasionally, cortical infarcts and intracranial hemorrhages can mimic lacunar infarcts, but true cortical signs (aphasia, visuospatial neglect, gaze deviation, and visual field defects) are always absent in lacunar strokes. The classic syndromes are as follows:

Silent lacunar infarction
A silent lacunar infarction (SLI) is one type of silent stroke which usually shows no identifiable outward symptoms, and is thus termed "silent." Because stroke is a clinical diagnosis (that is, it is defined by clinical symptoms), there is debate about whether SLI are considered to be strokes, even though the pathophysiology is presumably the same. Individuals who have a SLI are often completely unaware they have had a stroke.
Lepidopterism is an irritant contact dermatitis caused by irritating caterpillar or moth hairs coming into contact with the skin or mucosa. When referring to the cause, moth dermatitis and caterpillar dermatitis are commonly used; Caripito itch (known as papillonite in French) is an older name referring to the moth dermatitis caused by some Hylesia species. See also
Millipede burn
List of cutaneous conditions

References
Further reading
Hossler EW (2009). "Caterpillars and moths". Dermatol Ther. 22 (4): 353–66. doi:10.1111/j.1529-8019.2009.01247.x. PMID 19580579. S2CID 31799282. Hossler EW (January 2010). "Caterpillars and moths: Part II. Dermatologic manifestations of encounters with Lepidoptera". J. Am. Acad. Dermatol. 62 (1): 13–28, quiz 29–30. doi:10.1016/j.jaad.2009.08.061. PMID 20082887. Hossler EW (January 2010). "Caterpillars and moths: Part I. Dermatologic manifestations of encounters with Lepidoptera". J. Am. Acad. Dermatol. 62 (1): 1–10, quiz 11–2. doi:10.1016/j.jaad.2009.08.060. PMID 20082886. Katzenellenbogen, I. (1955). "Caterpillar Dermatitis as an Occupational Disease". Dermatologica. 111 (2): 99–106. doi:10.1159/000256344. PMID 13277355. Werno, J.; Lesthelle, S.; Doerman, F.; Vincendeau, P. (2002). "Envenimations par les lépidoptères". Revue Française des Laboratoires. 2002 (342): 35. doi:10.1016/S0338-9898(02)80059-2. External links
Caterpillar envenomation on eMedicine