Dr. E. Prashanthi Reddy
MBBS · DGO · Diploma in ART — Kiel University, Germany
Founder & Medical Director — Mother Hospitals & IVF Center, Boduppal
TGMC Registration: 50624 · 19+ Years of Clinical Experience · 5000+ IVF Cycles
Missed, infrequent, or unpredictable periods diagnosed and treated at the root cause — PCOS/PMOS, thyroid disorders, stress, weight changes. Dr. E. Prashanthi Reddy, Boduppal.
A normal menstrual cycle falls between 21 and 35 days. Anything outside this range — or cycles that vary unpredictably — warrants investigation.
Any persistent change in your cycle pattern lasting more than 2–3 months should be evaluated. This is especially important if you are trying to conceive, experiencing other symptoms such as excess hair growth, acne, or unexpected weight gain, or if your periods have become very heavy or very light alongside the irregularity. Early diagnosis means earlier treatment and better outcomes.
Dr. Prashanthi takes a detailed menstrual history, discusses associated symptoms, and arranges a targeted hormone blood panel and pelvic ultrasound at the first visit. Most women receive a working diagnosis within one week of investigation results.
Understanding the root cause of your irregular periods is the first step to restoring your cycle and protecting your fertility.
The most common hormonal cause of irregular periods, affecting ~1 in 10 women. Excess androgens and insulin resistance disrupt ovulation, causing infrequent or absent cycles. Treated with lifestyle changes, metformin, and hormonal regulation.
Both underactive (hypothyroidism) and overactive (hyperthyroidism) thyroid can disrupt the menstrual cycle. A simple TSH blood test diagnoses thyroid dysfunction. Medication restores normal thyroid levels and cycles normalise within 2–4 months.
High cortisol from chronic stress suppresses GnRH, reducing FSH and LH — the hormones that trigger ovulation. Extreme exercise (athletic amenorrhoea) and severe illness cause the same effect. Cycles typically normalise once the stressor resolves.
Both being significantly underweight (BMI below 18.5) and overweight (BMI above 30) can disrupt hormone balance and suppress ovulation. Even modest weight changes — as little as 5–10% of body weight — can restore regular cycles in many women.
Hyperprolactinaemia (high prolactin — a hormone usually associated with breastfeeding) suppresses LH and FSH, causing irregular or absent periods. Diagnosed with a blood test; often caused by a benign pituitary microadenoma. Treated effectively with cabergoline.
POI (before age 40) causes irregular or absent periods due to reduced ovarian function. FSH is elevated and AMH is very low. Requires specialist evaluation, HRT for bone and cardiovascular health, and urgent fertility discussion if pregnancy is desired.
Irregular periods almost always reflect irregular or absent ovulation — the essential first step of natural conception.
Each menstrual cycle should result in one egg being released (ovulation). Without ovulation, conception is not possible. Most causes of irregular periods — PCOS, thyroid disorders, elevated prolactin — are directly treatable, and restoring regular ovulation allows natural or assisted conception.
Women with PCOS who do not respond to weight loss and metformin alone can be offered ovulation induction with letrozole or clomiphene, and if needed, IUI or IVF. The success rates are excellent with appropriate management.
Treatment is always directed at the root cause — not just suppressing symptoms. Dr. Prashanthi's goal is to restore healthy cycles and protect your fertility.
For women who need their cycle regulated (e.g., for contraception, symptom relief, or to prepare for fertility treatment), combined oral contraceptive pills (OCPs) are effective. For women trying to conceive, cyclic progesterone is used to induce a withdrawal bleed and reset the cycle while ovulation induction is planned.
A combination of lifestyle modification (weight loss, low-GI diet, regular exercise), metformin (to reduce insulin resistance), and hormonal management. For women trying to conceive: letrozole or clomiphene for ovulation induction, with follicle tracking ultrasound. Needleless IVF for women who need IVF — Dr. Prashanthi's specialty.
Hypothyroidism is treated with daily levothyroxine (thyroxine) tablets. Hyperthyroidism is treated with carbimazole or propylthiouracil, sometimes with radioiodine. TSH is monitored 6-weekly until stable. Menstrual cycles typically normalise within 2–4 months of achieving euthyroid (normal thyroid) status.
For many women, lifestyle changes alone can restore regular cycles. Dr. Prashanthi provides structured guidance on: dietary changes (low-GI diet, reducing refined carbohydrates), appropriate exercise intensity (avoiding over-training), stress management, and achieving a healthy BMI. These changes work best when combined with medical treatment where indicated.
MBBS · DGO · Diploma in ART — Kiel University, Germany
Founder & Medical Director — Mother Hospitals & IVF Center, Boduppal
TGMC Registration: 50624 · 19+ Years of Clinical Experience · 5000+ IVF Cycles
Common questions about irregular periods, PCOS, thyroid, and cycle regulation.
A normal menstrual cycle is 21–35 days. Irregular periods are defined as cycles shorter than 21 days, longer than 35 days, varying by more than 7–9 days each month, absent for 3 or more consecutive months (amenorrhoea) when not pregnant, or accompanied by spotting between periods. Persistent irregularity should always be evaluated by a gynaecologist.
PCOS (now also called PMOS — Polycystic or Polyfollicular Morphology Ovarian Syndrome) affects approximately 1 in 10 women and is the most common cause of irregular periods. Thyroid disorders are the second most common hormonal cause. Stress, significant weight change, and elevated prolactin are other important causes.
Yes, significantly. Irregular periods usually mean irregular or absent ovulation (anovulation). Without ovulation, natural conception is not possible. The good news is that most causes are treatable — PCOS, thyroid disorders, hormonal imbalances — and the majority of women go on to conceive with appropriate treatment. Please do not delay seeking assessment if you are trying to conceive.
Yes — a hormone blood panel is essential to identify the cause. Tests typically include: FSH, LH, thyroid function (TSH, T3, T4), prolactin, testosterone and DHEAS, AMH (ovarian reserve), insulin, and fasting glucose. A pelvic ultrasound is also performed to assess the ovaries and uterus. Dr. Prashanthi orders the appropriate panel at the first consultation based on your specific symptoms.
Yes. Cortisol (the stress hormone) suppresses GnRH (gonadotropin-releasing hormone), which reduces FSH and LH — the hormones that trigger ovulation. This leads to delayed or absent ovulation and irregular cycles. Extreme weight loss, intense athletic training, and severe illness cause the same effect. Cycles usually normalise once the stressor resolves, but medical evaluation is still recommended to confirm there is no other underlying cause.
Hypothyroidism (underactive thyroid) causes heavy or irregular periods by affecting oestrogen metabolism and raising prolactin levels. Hyperthyroidism (overactive thyroid) typically causes light or absent periods. Both conditions are diagnosed with a simple TSH blood test and treated with medication (levothyroxine for hypothyroidism; carbimazole or propylthiouracil for hyperthyroidism). Menstrual cycles usually normalise within 2–4 months of achieving normal thyroid levels.
Options depend on the underlying cause and whether the woman wishes to conceive. Common medications include: combined oral contraceptive pills (OCPs) for PCOS to regulate cycles and reduce androgens; progesterone tablets given cyclically to induce a withdrawal bleed; metformin for insulin resistance in PCOS; letrozole or clomiphene for ovulation induction in women trying to conceive; and thyroxine or antithyroid drugs for thyroid-related irregular periods. Dr. Prashanthi selects the most appropriate option at consultation.
Yes — this is one of the most effective treatments for overweight women with PCOS. Even 5–10% weight loss can dramatically improve hormonal balance and restore ovulatory cycles. Excess adipose (fat) tissue raises insulin and androgen levels, which suppress ovulation. The combination of weight loss and medical treatment (metformin, letrozole) achieves significantly better results than either alone. Dr. Prashanthi combines structured lifestyle counselling with medical treatment for the best outcomes.
Explore other specialist services at Mother Hospitals & IVF Center.
Don't wait months hoping things will resolve on their own. A single consultation with Dr. E. Prashanthi Reddy can identify the cause and begin treatment — whether you want to regulate your cycle, relieve symptoms, or start your fertility journey.
Dr. E. Prashanthi Reddy · TGMC Reg: 50624