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Primary headache in Yemen: prevalence and common medications used.

1. Introduction

Headache canbe defined as prevalent and disabling condition affecting people in all age groups worldwide, resulting in low job performance and quality of life with a significant economic burden on societies [1]. Headache gains attention worldwide because it is a common discomfort making to the top ten list of complaints in ambulatory medical care [2] and has a low healthcare and public profile [3]. Moreover primary headaches rank among the most common and disabling disorders worldwide [4].

The impact of headache is incredible, for example, in children, one of the causes that result in absence from school and interfering with other daily activities [5, 6]. On the other hand, in elders the incidence of most primary headache may decline after 55-60 years of age [7, 8]. The prevalence of primary headache in certain studies in adults over 18 years accounts for about 6.4% of the population [9, 10]. If we go further toward Asia, one studymentioned that the prevalence of migraine is between 1 and 22% and that is lower than that reported for North America and Europe [11]. Furthermore, there is a lack in epidemiology of headache disorders in

Asia [11]. In addition, there is an overuse for analgesics and that maybe the cause beyond the high prevalence in certain Middle East areas such as Oman, Qatar, and Jordan where there is high prevalent self-medicating for headache [12,13] because the overuse of such analgesics can lead to overuse syndrome [14,15].

Several studies of prevalence of primary headaches in Arabic countries were conducted, for example, Saudi Arabia, Qatar, Oman, Bahrain, United Arab Emirates, Kuwait, and Jordan [2]. The major objective of our study is to help in understanding of distribution of primary headaches in Arab area and correlate with age and gender. In addition, to estimate the common medications used by Yemeni people.

2. Materials and Methods

2.1. Study Design. This is a cross-sectional observational study conducted by recruiting case-series of adults and elderly who have primary headache within the age group from 18 to 85 years. Subjects with primary headache received a simple explanation for the aim of the study as an ethical issue. If they agreed, the subject was interviewed. Confidentiality of the collected data was achieved by keeping data record in a locked room with limited access to the research team only.

2.2. Subjects and Questionnaire. The study included 12640 subjects from four Yemeni governorates that were selected to estimate the one-year overall prevalence in Yemen; they include Sana'a, Taiz, Al-Hodeidah, and Thamar. Subjects were approached at their work places, classes, or homes and selected in random manner. The study was conducted from July 2010 to September 2011. The study was carried out by using the principles described in the Declaration of Helsinki, including all amendments and revisions. Every subject was asked to complete a self-conducted questionnaire in the presence of the researcher to answer any inquiries and then reviewed immediately to detect and prevent any errors. Researchers interviewed illiterate subjects to complete the questionnaire. The questionnaire gathered information that included demographic data, family history, frequency and type of headache, and its impact on everyday activities, medications use, consultation regarding medication increasing with time, and frequency of headache after medication usage. The data were diagnosed according to the International Headache Society's diagnostic criteria [16].

2.3. Data Analysis. Statistical Package for the Social Sciences version 16.0 (SPSS Inc., Chicago, IL, USA) and Excel software version 2010 were used for data analysis. The descriptive analysis (%) and Chi-square test were used to make comparisons among categorical variables. For all statistical analyses, a P value of less than 0.05 was considered statistically significant.

3. Results

3.1. Demographic Characteristics of Subjects. The sample was of subjects (n = 12640) that were selected from four different governorates of Yemen within the age group from 18 to 85 years. The sample of study was represented in the males 67.7% while in the females it was 32.3%. As shown in Table 1, 33.8% of the subjects were high school graduates followed by bachelor degree holders (19%), diploma holders (16.24%), university students (8.98%), secondary school graduates (7.7%), master's degree holders (5.9%), and Ph.D. degree holders (0.56%). 98.8% were Yemeni people. 57.6% were singles and 40.2% were married. 23.3% were smokers and 76.7% were nonsmokers.

3.2. Prevalence of Primary Headache. The primary headache was found in 76.6% (n = 9684); the characteristics of patients were shown in Table 2. Two types of primary headache were observed in this study, tension type-headache (TTH) was 27.10%, and migraine headache (MH) was 14.50%, while unknown type was 35.01%. However, this difference between types of headache was statistically significant (P < 0.05).

On the other hand, the relationship between the primary headache and age of subjects was found and was statistically significant (P < 0.05), while the relationship between primary headache and sex was not (P > 0.05) (Table 3). In addition, the higher frequency of TTH and MH was in adults between 18 and 29 years (76.85% and 70.30%, resp.), and the lower frequency was in elderly more than 50 years (4.20% and 4.40%, resp.). Also, 70.15% of the subjects said that headache affected their activity of daily livings (ADL), and 64.1% had positive family history of headache.

3.3. Common Medication Used. The use, abuse, and incidence of medications in 9684 patients with primary headache were studied. The common medications used for headache were paracetamol (38.4%), ibuprofen (16.7%), aspirin (19.7%), diclofenac sodium (7.5%), naproxen (2.5%), mefenamic acid (2.2%), ergotamine (1.5%), and unknown (11.5) (Figure 1). In other meaning, 88.5% of medications were known by their users, while 11.5% were unknown. Furthermore, majority of subjects (62.26%) used the medications without medical advice and few of them did (37.73%). In addition 64.8% of subjects depend on family to get medications while 35.16% depend on physicians and pharmacists. 8.75% of patients used analgesics on daily basis, fewer than daily to weekly was 24.58%, fewer than weekly to monthly was 27.90%, fewer than monthly to one year was 24.79%, and patients who never use analgesics was 13.90%. In addition, 77.57% of subjects showed increased headache frequency on medication use, while 22.42% did not (Table 4).

4. Discussion

The overall one year period prevalence of primary headaches among adults in Yemen was estimated for the first time. About 76.6% of subjects complained from primary headache at least once per year. Primary headache included two types, migraine and tension-type headache. The prevalence in this study was much higher comparing with average global prevalence of headache (46%) [11, 17]. Similar results were reported in Arabic countries, namely, Oman and Qatar [18, 19]. Also, the same results were recorded in non-Arabic countries, namely, Northern Finland and Singapore [2023]. In addition, previous study was reported in Oman that showed a prevalence of headache of about 45% [24]; however, that study was among university medical students and not the general population. Other studies were performed in Arabic countries that showed high prevalence, except Saudi Arabia in which the prevalence of primary headache is ranged from 8 to 12% 19,25,26], which was much lower than that reported in all other studies from the Middle East area, while in Jordan the prevalence of primary headache was also higher than overall global prevalence [2].

On the other hand, Table 5 showed that TTH was more prevalent than that of MH (27.10% and 14.5%, resp.) and it was within the prevalence range reported from studies conducted in the Middle East area (3.1-36.1%) [3,18,24,27, 28]. Furthermore, our study was in concordance with other studies in Middle East area that showed that prevalence for tension-type headache was lower than its global prevalence (about 42%) [11], which seems to be the case for the whole Middle East area. Concerning MH, the prevalence in our study was higher than that showed in Arabic countries which was falls within 10 to 12.2% [18, 28, 29]. One study in Qatar showed that the prevalence was 7.9 %. In our study, the prevalence of MH was higher than the global MH prevalence (11.2%) [17], and in Western Europe (14%) [18] which was very close to that in our study [17]. Therefore, Yemen seems to have higher migraine prevalence than many other parts of the world.

In agreement with Alzoubi et al. [2], the family history of headaches was found in most of the subjects. Furthermore, ADL was affected more significantly than in that study, 70.1% and 51.6%, respectively. About 62.26% of our sample did not seek medical advice regarding their headaches.

The most common medication used in Yemen was paracetamol. Same result obtained from Jordan, where the only study discussed this issue. In addition most users in Jordan, rely on recommendations from non--medical advisers (the family members), this in agreement with Alzoubi et al with exception that usually users rely on friends rather than family members but both indicating a lack of communication with health professionals, physicians and pharmacists. In the same study the causes beyond popularity of paracetamol could be due to its availability as an over-the-counter medication, low price, and its safety and less side effects profile on the gastrointestinal tract [2].

The percentage of non-smokers was 76.7 % and smokers was 23.3% that was lower than in Jordan and surrounding countries reported smoking prevalence of about 26-48% [3033]. In agreement, our prevalence of smoking falls within the overall prevalence of smoking among adult males and females (21 to 37%) in the high-income countries and low to middle income countries (8.9 to 49%) [34]. Also, in agreement with other studies conducted in Arabic area the prevalence of headache is more in female than in male and the prevalence tended to be higher in younger patients below the age of 40 [19, 20].

5. Conclusion

In conclusion, 76.5% of our subjects have headache attacks at least once per year indicating that headache that is a major health problem in Yemen. In addition, young adults were the most affected especially by TTH. Absence of health attention and education regarding analgesic use led to abuse of such medications and could be one of the reasons beyond development of headache and this is why Arabic countries have the greatest prevalence of headaches. On the other hand, the educational programs should be planned and implemented to ensure safe practices and to limit random usage of analgesics and encourage population to seek for medical advice before administration.

http://dx.doi.org/10.1155/2014/808126

Conflict of Interests

The authors declare that there is no conflict of interests regarding the publication of this paper.

Acknowledgments

The authors would like to thank Belal Fadhel, Aqeel Fadhel, Mohammed Alraimi, Shoa'a Qahtan, Mohammed Al-Antary, Afrah Al-Gunaid, Yasmine Al-Arasi, Katebah Al-Alawi, Abdulwhhab Al-Aromah, Abdullah Shani, Abdullah AlZubaidy, and Yahya Alruaani for their help in data entry

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Salah A. Abdo, (1,2) Mohammed Amood AL-Kamarany, (1,2) Karem H. Alzoubi, (3) Mohamed T. Al-Maktari, (4) and Abdulrhman H. Al-Baidani (1)

(1) Department of Pharmacy Practice, Faculty of Clinical Pharmacy, Hodeidah University, P.O. Box 3114, Hodeidah, Yemen

(2) Tihama Foundation for Drug Studies and Research, Hodeidah, Yemen

(3) Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110, Jordan

(4) Department of Medical Parasitology, Faculty of Medicine and Health Sciences, Sana'a University, P.O. Box 2289, Sana'a, Yemen

Correspondence should be addressed to Salah A. Abdo; salah292006@hotmail.com

Received 25 July 2014; Accepted 7 October 2014; Published 5 November 2014

Academic Editor: Changiz Geula

TABLE 1: Demographic data (n = 12640).

Characteristic                      n       %

Gender
  Male                             8562   67.7
  Female                           4078   32.26
Age (years)
  18-29                            8754   69.25
  30-39                            2404   19.01
  40-49                             962    7.61
  [greater than or equal to] 50     520    4.11
Education
  Illiterate                        570    4.5
  Elementary school                 394    3.11
  Secondary school                  975    7.71
  High school                      4281   33.86
  Diploma                          2053   16.2
  University student               1136    8.98
  B.A.                             2407   19.04
  M.S.                              752    5.94
  Ph.D.                              72    0.56
Nationality
  Yemeni                          12492   98.8
  Arab                              146    1.15
  Foreign                             2    0.016
Marital status
  Single                           7283   57.6
  Married                          5084   40.2
  Other                             273    2.2
Monthly income
  Low (<232$ US)                   9318   73.7
  Medium (232-462$ US)             2594   20.5
  High (>462$ US)                   728    5.7
Smoking
  Smoker                           2945   23.3
  Nonsmoker                        9695   76.7

TABLE 2: Family history, frequency and type of headache.

Variable                             n       %

Headache frequency (n = 12640)
    Daily                           1087    8.6
    Fewer than daily to weekly      2737   21.6
    Fewer than weekly to monthly    2998   23.7
    Fewer than monthly to 1 year    2862   22.6
    No headache                     2956   23.4
Headache affects daily activities
  (n = 9684)
    Yes                             7286   70.2
    No                              2398   29.8
Other family members complaining
  from headaches (n = 12640)
    Father                          1006    7.9
    Mother                          1956   15.50
    Brothers or sisters             1527   12.10
    Other relatives                 2342   18.50
    More than one family member     1269   10.39
    None                            1584   12.50
    No headache                     2956   23.40
Type of headache (n = 12640)
    Migraine                        1831   14.50
    Tension                         3427   27.10
    Unknown                         4426   35.01
    No headache                     2956   23.40

TABLE 3: Prevalence of migraine and tension-type
headache according to ages and gender (n = 5258).

Type               TTH

Gender             Male              Female

Age                 n        %        n       %

18-29              1278     37.3     1434   41.8
30-39              226      6.60     174    5.10
40-49               52      1.50     119    3.50
[greater than or    59      1.70      85    2.50
  equal to] 50
Total              1615    47.10     1812   52.90
P value                   P > 0.05

Type               TTH

Gender             Total          P value

Age                 n       %

18-29              2712   76.85
30-39              400    11.70
40-49              171     5.0    P < 0.05 *
[greater than or   144     4.2
  equal to] 50
Total              3427    100
P value

Type               MH

Gender             Male             Female

Age                 n       %        n     %

18-29              641     35.1     644   35.2
30-39              191     10.4     137   7.5
40-49              78      4.3      59    3.2
[greater than or   53      2.9      28    1.5
  equal to] 50
Total              963     52.7     868   47.4
P value                  P > 0.05

Type               MH

Gender             Total          P value

Age                 n       %

18-29              1285   70.30
30-39              328    17.90
40-49              137    7.50    P < 0.05 *
[greater than or    81    4.40
  equal to] 50
Total              1831    100
P value

* The relationship between the primary headache and age
of subjects was statistically significant (P < 0.05),
while the relationship with sex was not statistically
significant (P > 0.05). TTH: tension-type headache;
MH: migraine headache.

TABLE 4: Approach to medication use among
headache patients.

Variable                           n       %

Nonadvice medical help for headaches (n = 9684)
  Nonadvice                       6030   62.26
  Advice                          3654   37.73
Advice on using analgesics (n = 3654)
  Physician                       993    27.71
  Pharmacist                      2661   72.82
Medications usage (n = 9684)
  Daily                           848    8.75
  Fewer than daily to weekly      2381   24.58
  Fewer than weekly to monthly    2702   27.90
  Fewer than monthly to 1 year    2401   24.79
  No use                          1347   13.90
Increase in headache frequency after analgesic use
  Yes                             2172   22.42
  No                              7512   77.57
Increase analgesic dose used over time
  Yes                             3335   34.34
  No                              6349   65.56

TABLE 5: Prevalence of TTH and MH in Arab countries.

Country            Prevalence of   TTH (%)   MH (%)
                   Headache (%)

Our study (a)           76          27.10    14.50
Jordan (b)             82.3         36.1      7.7
Oman (c)               83.6          --       10.1
Qatar (d)              72.5         11.2      7.9
Saudi Arabia (e)       8-12        3.1-9.5   2.6-5

TTH, tension type headache; MH, migraine headache.

(a) Adult population ([greater than or equal to] 18
years old) for 24-month prevalence.

(b) Adult population ([greater than or equal to] 18
years old) for 24-month prevalence.

(c) Population (>10 years old) for 24-month prevalence.

(d) Adult population (>15 years old) for 3-month prevalence.

(e) All population for 6-month prevalence.
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Title Annotation:Research Article
Author:Abdo, Salah A.; Kamarany, Mohammed Amood Al-; Alzoubi, Karem H.; Maktari, Mohamed T. Al-; Baidani, A
Publication:Neurology Research International
Article Type:Report
Date:Jan 1, 2014
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