Subacromial impingement occurs when the subacromial space is narrowed and weak structures in that space get compressed. Several causes for subacromial impingment have been detected: 1  Anatomical variations such as narrow SA space, type II or III acromion, osteophytes.ubacromial impingement occurs when the subacromial space is narrowed and weak structures in that space get compressed. Several causes for subacromial impingment have been detected: 1  Anatomical variations such as narrow SA space, type II or III acromion, osteophytes.
Diseases transmitted by mosquitoes include: malaria, dengue, West Nile virus, chikungunya, yellow fever, filariasis, Japanese encephalitis, Saint Louis encephalitis, Western equine encephalitis, Eastern equine encephalitis, Venezuelan equine encephalitis, La Crosse encephalitis and Zika fever.
While mosquitoes can carry blood-borne diseases like malaria, West Nile encephalitis and dengue fever, it is the aggravating bite that gives them their notoriety. Only female mosquitoes bite. Heat, light, sweat, body odor, lactic acid and carbon dioxide attract the female mosquito to skin.