Showing posts with label Head. Show all posts
Showing posts with label Head. Show all posts

Tuesday, April 4, 2017

Easy Steps To Head Lice Removal


By Frances Keith


Head lice are unfortunately very common which means that most people will catch them at some point, usually as a child. These insects spread by crawling from one person's hair to another's, so it is no surprise they are most common amongst children who often play with their heads touching. Knowing how to deal with head lice removal is therefore important as infestations occur frequently in school children, their friends and families.

Removal can be problematic because re-infestation can occur so quickly if a child's hair makes contact with that of someone who has not been treated. Studies have also found that these insects appear to becoming resistant to some of the chemicals used in lotions. These difficulties can be overcome, however.

Infestations should be taken care of quickly, as left untreated, even one louse will multiply. There are various lotions available to treat this problem. Scientists believe that lice will not become resistant to the newer lotions because instead of relying on insecticides, modern lotions contain silicones and oils, which physically affect the insects making them unable to breathe.

A health-care professional should be consulted before using any lotion, as some lotions are not suitable for everyone. It is particularly important to seek professional advice if treating a baby, pregnant women, an asthmatic, eczema sufferer, someone with cuts to the head, or someone with allergies or sensitive skin.

Instructions need to be followed carefully for optimum results as lotions can vary on how long they should be applied for, for example. Some lotions can be applied at night and washed off in the morning but others should be left on for a much shorter period of time. There are now lotions available that only require one treatment but usually treatment needs to be repeated one week later.

Tying back long hair and putting Afro hair in braids can help prevent re-infestation, as can washing bedding and clothes that have come into contact with the head. Everybody in a family needs treatment, and friends at school and out of school should be told so that their hair can be treated if necessary. Some schools will send out a letter asking parents to check their child's hair if a classmate has this problem, which is a great way to prevent re-infestation.

A natural way to deal with this problem is by wet combing with a fine-toothed comb; these can be purchased at pharmacies. Lots of conditioner needs to be used after washing and rinsing the hair, and the hair is then combed. After every stroke, wiping with tissue paper or rinsing the comb in a container of warm water will remove any pests. It is important not to miss any sections of hair and to repeat every few days until not a single louse is found. This is a good treatment for people sensitive to medicated lotions or desiring a more natural treatment but it is obviously more time consuming, especially for those with lots of thick, long, curly or difficult to comb hair.

Dealing with head lice removal is important because if left untreated the insects will multiply and may cause itchiness and irritation. This problem is incredibly common but the pests can be removed fairly easily if dealt with quickly.




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Thursday, January 19, 2017

Discuss Flashing light in eye when moving head


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Sunday, October 2, 2016

Bielschowskys head tilt 3 step test


When a healthy individual tilts their head, the superior oblique and superior rectus muscles of the eye closest to the shoulder keep the eye level. The inferior oblique and inferior rectus muscles keep the other eye level. In patients with superior oblique palsy, the superior rectus muscle’s action is not counteracted by the superior oblique muscles. This leads to vertical deviation of the affected eye when the head is tilted towards the effected eye. However, there is no deviation when the head is tilted towards the unaffected eye because the superior oblique muscle is not stimulated in the effected eye, but rather it is stimulated in the unaffected eye. When there is a discrepancy in ocular deviation based on which way the head is tilted, the patient is diagnosed with unilateral palsy of the superior oblique muscle due to damage in the Trochlear Nerve.




People with superior oblique palsy on one side experience double vision, which is improved or even abolished by tilting the head towards the shoulder on the unaffected side. Tilting the head towards the shoulder on the affected side will make the double vision worse by causing increased separation of the two images seen by the patient.


Fourth Nerve Palsy

A fourth nerve palsy typically causes diplopia that is worse in downgaze; hence, patients almost always report diplopia (or the tendency to close 1 eye) while reading. In some cases, examination of the affected eye reveals limited downgaze in the adducted position, but, in most cases, ocular motility appears grossly normal. Accordingly, it is essential to perform cover-uncover or Maddox rod testing to demonstrate a hypertropia that worsens on contralateral downgaze. Ipsilateral head tilting usually increases the vertical strabismus, and, therefore, patients typically (subconsciously) tilt their head to the opposite side to avoid diplopia.

The Parks-Bielschowsky 3-step test is a time-honored algorithmic approach to identifying patterns of ocular motility that conform to dysfunction of specific vertically acting extraocular muscles. The 3 steps are

1.     Find the side of the hypertropia.
2.     Determine if the hypertropia is greater on left or right gaze.
3.     Determine if the hypertropia is greater on left or right head tilt.

Beyond these 3 steps, it is also useful to determine if the vertical separation is greater in upgaze or downgaze (a fourth step) and check for relative cyclotropia.
The 3-step test is most helpful in determining whether a vertical strabismus conforms to the pattern of a fourth nerve palsy; for example, a right fourth nerve palsy shows right hyperdeviation that worsens on left gaze, right head tilt, and downgaze, with relative excyclotropia of the right eye.

Occasionally, a skew deviation mimics a fourth nerve palsy on the 3-step test but can distinguish itself by nonconformity to these rules. Practically speaking, the specific muscle(s) involved and the etiology of a vertical strabismus not due to a fourth nerve palsy is often not resolved by the 3-step plus fourth step test, because acquired vertical strabismus is often the result of the dysfunction of more than one muscle. In particular, thyroid eye disease, myasthenia gravis, or dysfunction of multiple ocular motor cranial nerves produces a wide variety of nonspecific patterns of ocular motility. The reliability of the 3-step test in identifying patterns of vertical strabismus lessens somewhat over time because of the phenomenon known as “spread of comitance”.
Bilateral fourth nerve palsy should always be considered whenever a unilateral palsy is diagnosed, especially after head trauma. Bilateral fourth nerve palsy presents with:-
  • ·      crossed hypertropia (ie, the right eye is higher on left gaze, and the left eye is    higher on right gaze)
  • ·        Excyclotorsion of 10° or greater (each eye rotates outwardly; best measured with  double Maddox rod testing)
  • ·         a large (≥25 D) V pattern of strabismus
Brazis PW. Palsies of the trochlear nerve: diagnosis and localization—recent concepts. Mayo Clin Proc. 1993;68(5):501–509.







Fourth nerve palsies are often congenital. An anomalous superior oblique tendon, an anomalous site of its insertion, or a defect in the trochlea are now recognized as causes of some congenital fourth nerve palsies; similarly, some cases of presumed congenital fourth nerve palsy are secondary to a benign tumor (eg, schwannoma) of the fourth nerve. Patients are often asymptomatic until the fourth to sixth decades of life, when their vertical fusional amplitudes diminish and diplopia develops. Most patients maintain a chronic head tilt. The long-standing nature of the head tilt can often be confirmed by reviewing old photographs . Patients with a long-standing fourth nerve palsy have a relatively large vertical fusional range (>3 prism diopters).

In patients older than 50 years, isolated fourth nerve palsy is typically caused by micro-vascular ischemic disease, and function always improves and typically resolves within 3 months. The fourth nerve is particularly vulnerable to closed-head cranial trauma due to the unique dorsal midbrain crossing anatomy. In addition, the fourth nerve can be damaged by disease within the subarachnoid space or cavernous sinus.


Diagnostic evaluation for isolated, non traumatic fourth nerve palsy usually yields little information because most cases are congenital, ischemic, or idiopathic. In patients in the vasculopathic age group, a full medical evaluation looking for vascular risk factors, including diabetes, hyperlipidemia, and hypertension is appropriate. Older patients should be followed to ensure recovery. Lack of recovery after 3 months should prompt neuroimaging directed toward the base of the skull to search for a mass lesion. Other possible causes of an acquired vertical strabismus include orbital restrictive syndromes (eg, thyroid eye disease or previous trauma). Skew deviation, partial oculomotor nerve palsy, or myasthenia gravis should be considered in atypical cases.