My Son Rafan, 12 Years Old. Since His Childhood, His

My son Rafan, 12 years old. Since his childhood, his urine discharge stream is narrow and strong, his penice is not more than one inch longer. He has blackish skin under the arm-pits. At the time of going to bed, his head sweat a lot. He does sleep good. He is intelligent and a student of class V. At present we are living in Bangladesh, we are citizen of Bangladesh. Your advice would be of great help in correcting the problem of my son Rafan. Thank you.