Complications include focal neurologic deficits depending on the site of hematoma and brain injury, increased intracranial pressure leading to herniation of brain and ischemia due to reduced blood supply and seizures. Subarachnoid hemorrhage
A subarachnoid hemorrhage (SAH) is bleeding into the subarachnoid space—the area between the arachnoid membrane and the pia mater surrounding the brain. Trauma can also cause SAH when the arteries and veins coursing through the subarachnoid space are ruptured. It is usually located at the cerebral sulci near the vertex of the head and spare the basal cisterns on CT scan. Severe trauma can cause SAH in all parts of the brain. When the SAH volume is large, rarely it can cause cerebral infarction a few days after trauma due to arterial vasospasm. Although CT scan is performed more often than MRI to detect SAH, MRI is more sensitive than CT in this aspect. SAH shows hyperintense signal of Fluid-attenuated inversion recovery (FLAIR) sequence and blooming artifact on susceptibility weighted imaging (SWI).Computed tomography angiography (CT angiography) or Magnetic resonance angiography (MR angiography) should be done if fracture involves the carotid canal, because in such cases, posttraumatic vasospasm can occur, thus cutting blood supply to the brain. Besides, intracranial hemorrhage that are atypical for trauma should also be investigated further with CT or MR angiography to look for other causes of intracranial bleeds apart from trauma causes. Such atypical patterns includes: isolated SAH in the basal cisterns, isolated large-volume SAH in the Sylvian fissure, and isolated SAH in the anterior interhemispheric fissure.
Balantidiasis is a protozoan infection caused by infection with Balantidium coli. Symptoms and signs
Usually asymptomatic in immunocompetent individuals, but the symptoms of balantidiasis include:
Intermittent diarrhea
Constipation
Vomiting
Abdominal pain
Anorexia
Weight loss
Headache
Colitis
Marked fluid lossThe most common ones are intermittent diarrhea and constipation or inflammation of the colon combined with abdominal cramps and bloody stools. Transmission
Balantidium is the only ciliated protozoan known to infect humans. Balantidiasis is a zoonotic disease and is acquired by humans via the feco-oral route from the normal host, the pig, where it is asymptomatic. “Contaminated water is the most common mechanism of transmission. Equally dangerous, however, is the ingestion of contaminated food.”

Morphology
Balantidium coli exists in either of two developmental stages: trophozoites and cysts. In the trophozoite form, they can be oblong or spherical, and are typically 30 to 150 µm in length and 25 to 120 µm in width. It is its size at this stage that allows Balantidium coli to be characterized as the largest protozoan parasite of humans. Trophozoites possess both a macronucleus and a micronucleus, and both are usually visible. The macronucleus is large and sausage-shaped while the micronucleus is less prominent. At this stage, the organism is not infective but it can replicate by transverse binary fission.In its cyst stage, the parasite takes on a smaller, more spherical shape, with a diameter of around 40 to 60 µm. Unlike the trophozoite, whose surface is covered only with cilia, the cyst form has a tough wall made of one or more layers.