In the eastern part of the country it rains more than in the west. There are three temperature zones in Nicaragua. In the lowlands (Pacific and Atlantic coast) temperatures vary roughly between 72Â° F at night and 86Â° F at daytime (22Â° C - 30Â° C). Temperature can reach 100Â° F in May (38Â° C).
Dark circles, or bags under your eyes, have many causes. These include: 1  Increased melanin (also called hyperpigmentation) also post-inflammatory hyperpigmentation due to allergies ('allergic shiners'). 2  Fat loss beneath the eye or shadowing due to skin laxity. 3  Broken blood vessels.
Nasal Congestion and Allergies. The most common cause of dark, bluish circles under the eyes of children is sinus congestion, reports Barton D. Schmitt, M.D., at Parents. Inflammation and congestion in the nasal passage cause the veins around the child's eyes to enlarge and become darker, creating the dark tinge under the eyes.